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Black Toenail: Causes, Treatments, and Mor

Black toenail caused by trauma from an injury usually resolves on its own without treatment. However, if your toenail grows out and it still appears black, then the symptoms might be related to.. Injuries can cause toenail discoloration. A red area will appear that turns purple over time and then brown or black. People may notice this after they stub their toes, wear tight shoes when..

Typically, toenails should be more or less a clear, partially translucent color. But sometimes, they can appear yellow, green, blue, purple, or black. Several things can cause toenail discoloration.. A black spot under the nail can indicate a type of melanoma called acral lentiginous melanoma (ALM). These melanomas can appear anywhere on the body, including underneath fingernails and toenails. The sub-type of ALM that affects the nail is called subungual melanoma Fungal infections are another common problem that can cause black toenails to form. Typically, a fungal infection causes a white or yellowish discoloration. However, debris can build up near the.. If you stub your toe or drop something heavy on your feet, you may develop a subungual hematoma, which is blood trapped beneath the toenail. This gives the toenail a red, black, or purple discoloration. It is often called black toenail for that reason

Toenail discoloration: Causes and treatmen

Another cause of black lines on the nails is a splinter hemorrhage, which occurs when blood vessels under the fingernail are damaged, often due to injuries, such as hitting. More seriously, a black.. If your toenail isn't black, but has a black stripe running across or down it, the most common cause is a condition called linear melanonychia. This condition occurs when pigments in the nail.. The best way to get rid of black toenail fungus is to trim the toenail, and remove the dry blood underneath the toenail. If you can successfully get rid of the black toenail fungus, a good healthy toenail should grow back over time. Our favorite way to do this is to use a strong clipper and to remove it A dark color, caused by debris building up under your nail; Smelling slightly foul; Nail fungus can affect fingernails, but it's more common in toenails. When to see a doctor. You may want to see a physician if self-care steps haven't helped and the nail becomes increasingly discolored, thickened or deformed Common Causes of Black Toenail. Toenail discoloration is pretty common. That's why a lot of people don't really worry about it that much. Among the usual culprits of black toenails are: trauma from injury; repeated trauma (usually a result of constantly bumping your toes against the front of your shoes

If you notice your dog's nails turning black, it could be a sign of infection or a natural change due to your dog's pigmentation If dirt and debris accumulate under the nail, the toenail may appear dark. There's a foul odor emanating from your feet. In some instances, toenail fungus doesn't cause discomfort, though misshapen nails can pose a problem when wearing shoes. In more severe cases of infection, the toenail may loosen from the nail bed or fall off altogether Jillian O Keeffe Toenail discoloration is one symptom of a toenail melanoma. Melanoma is a serious type of skin cancer, and one of the unusual places it may originate is the skin under the toenail. Most common in people with dark skin, toenail melanoma can affect any nail on the foot

Toenail Discoloration: 6 Potential Causes and How to Treat

  1. Signs you may have a toenail fungus include: thickness and discoloration of your toenail, discoloration may be yellow, brown, black or shades of any color of the rainbow, your toenail will begin to lift from the nail bed
  2. Blue, purplish or black discoloration of the toenail. May cover the entire nail or be limited to one area. Often appears spontaneously. The nail may become loose or fall off. A sharp or dull pain may be present. There may be redness and swelling around the nail. In few cases, there may be bleeding or pus draining from under the nail
  3. From trauma to a toenail fungus, there are many reasons why you may have a black toenail or black spots on a toenail. Here's what it means, how to treat them—and when you should call your doctor
  4. Red or black (that may sometimes appear bruised) nails may result from a hematoma (a collection of blood) under the nail as a result of trauma (including ingrown toenails). Chronic medical conditions also can affect the appearance of the nails
  5. Skin Cancer A discolored spot underneath a toenail may be a sign of melanoma, a potentially fatal form of skin cancer. Melanoma under a toenail usually looks like a brown or black streak or may.
  6. removal of the toenail to treat the nail bed Treating toenails for fungus may require you to stick to the treatment plan for several months. Toenails grow slowly, and they can take 12 to 18 months.

Is This Black Spot Under My Toenail Cancer? U

  1. There could be different reasons for a dog nail to turn black. One of them is the dog nail bed infections. Usually, claw infections caused by bacteria are responsible for making a dog nail black. However, a fungal infection could also be the cause behind nail discoloration
  2. Black, purple, or brownish discoloration of the toenail is frequently due to trauma. The most common trauma is from objects being dropped on the toenail. The black discolorations of nails frequently seen in runners is called runners toe. This discoloration results from bleeding under the nail
  3. Signs of a toenail fungal infection. Discolored toenails. Nails can be brown, black, white, or yellow. Usually a small area changes color at first and it slowly spreads. Thickened toenails. Over time, the nail becomes thick, material builds up under the nail, and the nail can develop an irregular shape, grooves, or a crumbling appearance
  4. Nail Trauma: If you've recently injured the area, the black spot under the nail may be a type of bruise referred to as a subungual hematoma. As a result of an injury, blood pools under the nail leading to discoloration
  5. ‍Yellow to brown to black nail discoloration. Thickened nails. Brittle, crumbly, or ragged texture. Changes in nail shape. Foul smell ‍If all signs are pointing to a nail fungus, you can schedule an appointment with your local doctor for treatment, or have an Online Visit with our U.S. licensed doctors today

Black toenail: 6 potential causes - Medical News Toda

A black toenail may be caused by: An underlying medical condition: This may include anemia, diabetes, heart disease, or kidney disease. Fungal infections: While these often look white or yellow, fungal infections can sometimes cause black toenails from debris buildup A black toenail that appears without trauma or fungal infection could be melanoma. Melanoma is a skin cancer. If you suffer from a medical condition like anemia or diabetes, it can also cause black toenails. Discoloration related to a health condition must first treat the underlying causes. How to Prevent Black Toenails Black Spot on Toenail: A Closer Look. That unsightly black spot can be a small or large dot that appears on the nail bed of the toe or under the toenail. It could be a black toenail fungus or a collection of dried blood from a recent injury to the toe. The latter may be the result if the area is tender to the touch or causes pain Discolored toenails may occur as a result of a stubbed toe. Toenails that are black may indicate a hematoma, which is essentially pooled blood. This most frequently happens because of a stubbed toe, something heavy that has been dropped on the foot, or an ingrown toenail. These will usually go away on their own after a time, though it can take.

Lois opinion maintains that Canine nail color change or discoloration is normal amongst her dogs, even if dog nail turned white or black mixed with other colors. My Dog Nail Turning Black Review By Julian Meeks-Wagner. Julian Meeks-Wagner who studied at the University of Oregon has also given his thought about dog nail turning dark 5. Spoon Toenails. Nails that curve upward around the edges, like a spoon, can indicate iron-deficiency anemia, hemochromatosis (excess iron absorption), heart disease or hypothyroidism. 4. Mees' Lines. This refers to discolored lines that cross the width of your toenails Black colored fungus. Going with nail fungus untreated can especially the black variety can cause you to have tetanus. Furthermore, the discoloration will cause you embarrassment and you may want to hide your toenails all day long in closed shoes or under layers of nail polish Greenish-black discoloration is typical of Pseudomonas aeruginosa infection (Figure 7.20). It often starts at one side of a finger nail, growing out from under the proximal nail fold. A slight thickening of the latter and breaks in the cuticle may accompany the condition

Melanonychia on Nails: Symptoms, Causes & Treatment

Toenail discoloration can be a local problem—just something wrong with the toenail for a short period of time. And many distance runners aren't strangers to the surprise black toenail after. Toenail fungus or onychomycosis is a common disease that affects the nails. Contrary to popular opinion, most toenail infections start on the skin and then spread to adjacent nails. Over time, infected toenails may change color and turn black. Here is some more information about toenail fungus and toenail discoloration: Cause Vertical nail bands must be differentiated from subungual melanomas, which account for 50 percent of melanomas in persons with dark skin.1 Distinguishing features that increase the likelihood of.

A doctor explains the differences between a melanoma black line under the fingernail and a normal one. Splinters or dark streaks under nails can occur when microscopic areas of bleeding happen and allow blood to settle under the nail, says Dr. Joel Schlessinger, MD, board certified dermatologist and cosmetic surgeon with a private practice in Omaha, NE Yellow nail syndrome is a rare condition that causes thickening and discoloration of toenails and fingernails. The National Organization for Rare Disorders NORD reports that yellow nail syndrome causes nails to become thickened, yellow, and excessively curved and can affect both toenails and fingernails It is this microorganism that has the potential to give the nail an almost black (more likely a blue-black) color. Another microbe, Fusarium, can cause a blackish patch in a toenail. Black toenails in a diabetic can happen when the foot has suffered a lack of oxygenated blood and necessary nutrients, says J. Mark Anderson, MD, DABFM, of. What makes a toenail to turn black? Naturally, toenails are white in color. Discolorations occur by different factors such as nail polish, infection, lack of proper nutrition or trauma. There are also other causes of toenail discoloration such as nail polish, lack of proper nutrition, injury or trauma. Discolored toenails can be attributed to.

Black Toenail

When to Seek Treatment for Toenail Traum

You might notice a subungual hematoma after your run first as a small black spot, but over the next few days, the discoloration can grow in size, Priya Parthasarathy D.P.M., a member and. Melanonychia can present in individuals of all ages, including children, and affects both sexes equally. It is more prevalent in people with skin of colour, especially Fitzpatrick skin type V and VI. Nearly all Afro-Caribbean people will develop black-brown pigmentation of the nails by the age of 50. Melanonychia affects up to 20% of Japanese. For example, ice pick-like depressions in the nails (nail pitting) are common in people who have psoriasis — a condition characterized by scaly patches on the skin. Nail pitting can also be related to connective tissue disorders, such as Reiter's syndrome, and alopecia areata — an autoimmune disease that causes hair loss. Habif TP. Nail.

Pictures of Toenail Colors and What They Mea

Please use one of the following formats to cite this article in your essay, paper or report: APA. Thomas, Liji. (2019, February 27). Nail Discoloration - Green, Blue, Black, White or Yellow, Why ? Black toenail is characterized by a discoloration of the nail (usually black, dark red, purple or burgundy) that is often coupled with a throbbing pain generated by the pressure of the thickened blood collecting between the nail and the nail bed. Sometimes you'll notice discharge and an unpleasant smell. If a severe blow, crush or other type. Occasionally, dark discoloration of the nail bed is merely a matter of skin tone. Sutera sees this most often in patients of color. There's skin underneath your toenails, and just like skin.

Until the nail grows out, however, you can expect weeks to months of blue-black discoloration. Interestingly, fingernails grow faster than toenails so it takes longer for your toenails to grow out. In addition to discoloration, blood under the nail can result in pressure and pain, which can be relieved by a primary care physician or podiatrist. Green nail syndrome (GNS) is an infection of the nails that leads to a greenish discoloration of nails, also known as chloronychia. The green discoloration varies from blue-green to dark green to bluish-grey. Since the discoloration is underneath the nail, it will not disappear with washing or scrubbing The area where the nail comes loose will often have a white appearance where it has separated from the underlying nail bed. Some fungal and bacterial nail infections produce a dark brown or greenish discoloration and may also cause nail loosening Nail discoloration can be caused by a variety of conditions, such as reactions to medications (blue discoloration), bacterial infection (green-black), fungal infection (yellow), or even. Many people who have diabetes toenails may have a hard time believing that having yellow toenails is embarrassing, but the truth is that the appearance of the yellow toenails is a result of toenail discoloration. Nail discoloration can actually cause by many different things, including diabetes toenails

Toenail trauma can result in secondary bacterial or fungal infection if any part of the nail has come loose.   This can lead to the dark discoloration of the toenail. Acute trauma may also result in a fracture of the bone beneath the nail, to which the nail is in close proximity With black nails, however, there are several potential causes, including: Injury or physical trauma to a toenail. This is the most likely cause of your black toenail. The discoloration being the result of bruising or blood pooled under a toenail (subungual hematoma) in response to physical trauma. Specific causes of trauma include: stubbing a. Yellow discoloration in your fingernails can also result from a respiratory condition, such as chronic bronchitis, or from swelling of your hands . In yellow nail syndrome, nails thicken and new growth slows, resulting in discoloration. Nails affected with this condition may lack a cuticle and may detach from the nail bed in places 1. Trauma. According to Dr. Gennady Kolodenker, a podiatrist in Irvine, CA, traumatic injury is the leading cause of black toenails. This causes blood to collect in the tissues beneath the surface of the nail, a condition medically referred to as subungual hematoma, resulting in a discoloration of the nail plate The cause of toenail discoloration depends on the color of the nail. These abnormal nail colors can be grouped into black, yellow, blue, green, blue-green, gray, pale, purple, brown/copper and red groups

Causes of Nail Discoloration. If you've noticed that your fingernails aren't looking quite the way they used to, don't panic yet. There are a few fairly harmless reasons why nails can change color: -Using dark nail polish can leave nails stained close to the color of the polish or may leave them an orange- yellow shade -Smoking can turn nails a brownish color -Reactions to certain. Runner's toenail, also known as jogger's toenail, is when your nail or surrounding area becomes black from the repeated stress of running. The discoloration comes from blood that leaks from. The usual discoloration of the toenail is a yellowish brown hue. If there are other organisms causing the change in the toenail, the discoloration may take on a dark green to black appearance. Black toenail can also be caused by trauma, autoimmune disorders, and melanoma. So it is important to arrive at the right diagnosis before treatment Toenail discoloration is a staining of the nails into white, yellow, or greenish, which is a result from fungal infections particularly from Trichophyton rubrum. Another rare cause of toenail discoloration is the yellow nail syndrome, which is genetically inherited condition. Discoloration can also be caused by the disjointing of the nail. Nail changes to look for. Dark areas near the cuticle of the nail (subungual lesions): These look like bruises under the nails, and are usually along the bottom edge of the nail, near the cuticle. These kinds of color changes can be seen in nail cancer (called melanoma) and can also be a side effect of some types of drugs used to treat cancer

Typically, your toenails must be of clear or translucent color, that is, they should be semi-transparent color, which is a sign of a healthy body. Many a time, toenail discoloration or purple toenails is a common problem complained about by men. Sometimes your toenails can appear like purple toenails, dark toenails, or even blue toenails The visual appearance of the fingernails and toenails may suggest an underlying systemic disease. Clubbing of the nails often suggests pulmonary disease or inflammatory bowel disease. Koilonychia, o

All the Causes of Nail Discoloration, and How to Treat

Black toenails are mostly harmless. Sometimes, in painful situations, the liquid underneath the toenail needs to be drained or the nail removed. Often, however, black toenails simply fall off and a new toenail grows in. Ingrown toenails that go untreated can become discolored, leading to black toenails Black, white, or brown discoloration in your dog's nails can be a sign of a fungal or bacterial infection. Symptoms of a fungal infection in a dog's nails include: Itchiness or tenderness. Favoring one leg. Swelling at the base of the nail. Nail appearing distorted or misshapen

Remove paper seal and replace cap. Gently shake the bottle until gel fills the applicator nozzle. Remove black cap and apply one or two drops of NonyX Nail Gel twice daily to the surface of discolored nails and under the edge of the nail. Spread the gel out over the nail surface with the applicator tip. For best results, always apply after bathing A glomus tumour is a benign vascular neoplasm, which most commonly presents as a red-blue area of discoloration under the nail. Lesions are usually tender, particularly following change in temperature or pressure; Splinter haemorrhages . Seen as 1-3 mm, red or brown-black, longitudinal bands of the nail bed (not plate Color changes of nails. III. Causes: White Nail - Leukonychia (partial or complete) Anemia (most common) Congenital ( Autosomal Dominant) Abnormal keratinization of underlying nail matrix. Results in nail plate white discoloration of one or multiple nails with all or partial nail involvement Fungi Nail Fungi Nail Anti-fungal Pen Twin Pack, Black, 2 Count 4.4 out of 5 stars 17. Repairs and Protects from Discoloration, Nail Fungus Stop,Fungi Nail Fungus Remover set for Fingernail Fungus, Toenail Fungus Stop Nail Repair set 4.2 out of 5 stars 211 Nail pigment bands or melanonychia are quite common in people who have dark skin. It is estimated that 70 percent of African Americans over the age of 20 have nail banding and almost all African Americans over the age of 50 have some type of nail pigment discoloration

Fortunately, most of the times cancer is not the cause of the dark discoloration, but it is still important to know when to come see Dallas Podiatry Works and receive the black toenail treatment you need. Symptoms and Causes of Black Nails. The most apparent symptom of this particular condition is discoloration of the affected nails A toenail can also become discolored from fungal infections in the skin under and around the nail. Toes can turn black from a lack of circulation causing gangrene, which is death of body tissue. If there is any doubt what is causing your black toenail, see your doctor or podiatrist

3 Easy Ways to Treat a Black Toenail - wikiHo

According to doctors from the National Health Service, toenail fungus can cause the nail to turn black, white, green, or yellow. You will also find that as well as the toenail becoming discolored, fungal nail infections are one of the main reasons why toenails thicken and become crumbly.The thick, black toenail may also cause pain if it puts pressure on your toe. Having black toenails can be very embarrassing and sometimes painful. There are many reasons why a toenail can turn darker in color. Sometimes discoloration of the nails can occur from nail polish, trauma or infection Black toenail fungus is characterized by thick and discolored nails. The organisms feed and destroy the nail's keratin. The organisms feed and destroy the nail's keratin. The main purpose of keratin is the fact that it is responsible for keeping the nails strong and hard

A foot soak can help with black toenail fungus. Many who experience black toenail fungus experience intense pain beneath the nail. Discoloration can also be an issue for those who like to wear sandals during warm weather. Treatments may vary based on the severity of the condition The chronic repetitive trauma can range from mild (think: a small, painless, black-and-blue discoloration beneath the nail) to severe (large, bloody blisters between nail and nail plate), adds.

EGFR inhibitors, sunitinib, imatinib, and sorafenib. Nail pigmentation can also be drug-induced. This includes: Brown or black transverse and/or longitudinal bands — which can be due to melanonychia ( melanocytic stimulation) from zidovudine, psoralens (PUVA), hydroxyurea and other chemotherapy drugs As you have noticed, however, some nail polishes can cause nails to turn an undesirable yellow. The short answer is that in the case of nail polish and nail plate staining, the color painted on your nail can actually penetrate the layers of the keratin of the nail itself. This leads to discoloration and usually appears yellow Don't risk additional complications by ignoring uncomfortable, discolored toenails. Instead, have your black toenails examined by expert Dr. Howard Schaengold. Contact The Plateau Foot & Ankle Clinic in Sammamish, WA for an appointment or more information today. You can reach us at (425) 868-3338 for expert foot care in the Redmond, Bellevue. Discolored toenails - black, yellow, white and greens shades of color; Brittle nail; Thickening nail; Sometimes can be itchy; Bad smell; Scaly skin next to the toenails; No pain, usually; The most likely disease that occurs in toenails is a fungus infection. As the fungus attacks the nail and nail bed, the toenail discolors to darker shades See a podiatrist: If you are runner, this is a common injury called black toe syndrome due to blood bruises under the nail plate. Other causes of black toenails are infections - either bacterial or fungal. Another cause may be from a fracture in the last bone of the toe. In any case, see a podiatrist who can examine and treat any of these conditions and recommend ways to prevent recurrence

Even with 100 percent acetone nail polish remover, dark nail polish colors can leave stains on your nails, which is a pain to deal with. But while stains may be offensive to your eyes, they don't. Discolored toenails caused by polish tend to be otherwise healthy, strong and thick. However, unhealthy nails will be weak and even a bit crumbly. If nail polish is the cause, your nails can be tinted a wide range of colors, like purple, red, pink, blue, black or orange. Nails with fungus tend to be off white or yellowish in color A nail that bleeds for no reason or develops a bump or raised area. Cracking or splitting nails (can also be related to nail fungus). If you have a nail that comes away from the nail bed without any physical trauma or injury to that nail or toe. Purple, brown or black spots, marks, streaks, lines or patches know as Melanonychia

Melanonychia: Symptoms, Types, and Cause

Black toenails from running are not only painful, but can end up infected or falling off. If your toenail hurts, this article will explain how common black toenails are for runners, what causes them so you can avoid black toenails in the future, and how to treat your bruised toenail correctly, so they can heal in less time Discoloration (blue arrow), nail lifting from the finger, and a thin line of blood (black arrow) are common signs of nail psoriasis. Nail psoriasis usually begins years after psoriasis first appears on the ski When injured, the toenail will often appear black or purple as blood collects under the nail, which is called subungual hematoma. The blood puts pressure on the nail, which may fall off after.

Why Do Dogs Toenails Turn Black? [Causes, Treatments

The toenail on my large toe has begun to show dark blue areas just around the base of the nail at the 7:00 and 5:00 areas, almost as if I had dropped something on the toe and it is bruising beneath the nail. But I have no recollection of hainvg experienced any trauma to the toe. Any hint as to what this might be? The ail isn't thickening However, similar dark lines or discoloration in or around a nail can be an early sign of cancer, particularly melanoma, which can develop from the pigment cells of the nail-making tissue (nail matrix). Doctors usually do a biopsy of the nail matrix if they are concerned a discoloration might be cancerous

A black toenail can signal a variety of changes—some benign, but others more painful and serious. Nails change colors for multiple reasons. The most common culprit for a black toenail is blood under the hard tissue. Damage to the end of the toe causes blood to leak through the nail bed and stain the keratin a dark color Black colored skin, Bruising or discoloration, Pain or discomfort and Swelling An ingrown toenail, when the side of the toenail grows into the skin, causes toe redness, pain, and swelling. Osteomyelitis (bone infection) Osteomyelitis is an infection of a bone that causes pain, swelling, and redness Subungual hematoma may cause significant and throbbing pain, bluish black discoloration, and, unless small, eventual separation and temporary loss of the nail plate. When the cause is a crush injury, underlying fracture and nail bed or matrix damage may occur. Nail bed or matrix damage may result in permanent nail deformity Black Toenail: Common Causes If your toenail turns black, it's most likely a bruise under the nail, technically called a subungual hematoma. You can get it from stubbing a toe or from footwear that cram your feet into the front of the shoe The nail plate is the hard part of the nail that appears on top of the skin. Advertising Policy. By removing the polish from your toenails, you expose the surface of your nails to the air. This.

Black Toenail — Causes, Treatment, and Preventio

Black Toenails. A black, purple or brownish discoloration under or involving a toenail is frequently due to trauma to the toenail, such as when something is dropped on the toe. The color results from a blood clot or bleeding under the nail and may involve the entire nail or just a small portion of it Therefore, a brown or black toenail discoloration which lasts for more than several weeks without signs of subsiding can be a sign of cancer. Other Causes. Toenail discoloration can also be caused by various other factors including vitamin deficiency, aging, and hormonal imbalance, especially the disturbance in thyroid hormones Thick toenails may go unnoticed in the early stages. But as the nails get more obviously thicker, a person may notice several symptoms, including: brittle, easy-to-break nails. bad odor from the. Fungal infections are considered a common cause of black streaks in fingernails. They may also cause your nail to thicken, creating a more obvious or severe deformity within the nail. 4. Melanonychia. This fingernail condition includes black lines on the nails, nail discoloration, and/or excessive pigmentation Toenail fungus goes through stages of discoloration as it worsens. At first, you may see white splotches, some thickening of the nails, or perhaps a yellow discoloration. Over time, however, toenail fungus may present as a brown or black discoloration. This signifies advanced toenail fungus

Black Toenail: Causes, Treatment, Grow Out | FootfilesBlack Toenail Fungus TreatmentMedical Pictures Info – Peripheral Vascular

A fungal infection causes a toenail to become discolored 1. The nail usually turns a dark color from dirt or debris that has become trapped underneath the nail. Other symptoms of fungal infection include a foul smell, thickened nail, crumbled nail or a dull toenail that is misshapen. Toenail fungal infections are typically caused by fungi. Black or darkened toenails can be indicative of many different things. The discoloration can be due to bleeding under the nail, which can be caused by direct trauma or by banging of the toenails in the shoe. Runners and tennis players often suffer from this problem. The medical term for this is called subungual hematoma Usually, one of the first signs of a toenail falling off is some discoloration of the nail. Vanessa Ngan says that part of the toenail may become yellow, white, or green.If the toenail has been injured, you may have bruising under the nail which looks like a yellowish, black spot.. Depending on the underlying cause why you lose a toenail, you may notice other changes in the toenail and nail bed Discolored, brittle, or thick toenails (and fingernails) can be a sign something isn't quite right in your body. But that doesn't mean there's an immediate cause for concern. But that doesn't mean. A prolonged toenail infection can cause discoloration and deformities of the nails. Read more on acrylic nail fungi. Causes and Types of Toenail Infections. Yellow, brown, green and even black discoloration of the nails. Thick, twisted and deformed nails. Redness and swelling around toenails

Subungual HematomaHow to Get Rid of Thick Toe Nails | LIVESTRONG

Nail Discoloration: Symptoms & Signs. Nail discoloration, in which the nails appear white, yellow, or green, can result from different infections and conditions of the skin. In about 50% of cases, discolored nails are a result of infections with common fungi that can be found in the air, dust, and soil Toenail discoloration can have several causes, including fungal infections and dark nail polish. A commercial toenail whitener can be used to lighten discolored toenails. Hydrogen peroxide, lemon juice, baking soda, and even whitening toothpaste can also be used to whiten toenails naturally. To prevent discolored toenails, feet should be washed. Homeopathic Medicines for Black or Blue Nails due to Injury. It is common for a nail to turn black after an injury. Dark spots or streaks rather than full discoloration of the nails may be caused by bruising, psoriasis, melanoma (a type of skin cancer), chronic infections. Lachesis for Black Nails with Bluish Swelling and Stinging Pains. This. But there are really three reasons that you get this bruising and discoloration that we see as black toenails in runners. Running shoes too tight. Now, the first one is that your running shoes are just too tight. So if the shoes are too small, the nail's pressed against the inside of the shoe. It gets aggravated, it gets irritated, you're. What horizontal toenail ridge means. You might not spend a lot of time paying attention to the toenails, although some changes on them, including toenail discoloration may convey a significant information about your health status. Horizontal ridges that occur on your toenails is known as the beau's lines