What Is Melanonychia? What Causes It and How It's Treated - WebMD
网页2023年7月23日 · Melanonychia is a brown or black color in your nail. It can affect your fingernails or toenails. It can be in one nail, a few nails, or all of your nails. Melanonychia can have many different...
Melanonychia: What It Is, Causes, and More - Healthline
网页2023年10月3日 · Having a dark line on your fingernails or toenails is called melanonychia. The lines are brown or black and usually look like a stripe that begins at the bottom of your nail bed and continues...
Melanonychia: Causes, treatments, and diagnosis - Medical News Today
网页2024年7月22日 · Melanonychia is the term for dark pigmentation of the nails. The discoloration in the nails may be black or brown. Melanonychia can be a natural occurrence in people with dark skin, but...
7 fingernail problems not to ignore - Mayo Clinic
网页2023年6月30日 · Nail clubbing may be caused by: Low oxygen in the blood. Lung disease. Heart problems. Liver cirrhosis. Gastrointestinal problems. Spoon nails are soft nails turned up around the edges. This condition also is called koilonychia. Spoon nails often are a symptom of iron deficiency anemia. Or they may be due to a liver problem called hemochromatosis.
Melanonychia: Pictures, Types, Symptoms, Causes, and More - Healthgrades
网页2022年7月25日 · Melanonychia refers to brown or black discoloration of the nail plate. It may occur in either the fingernails or toenails. It can be benign or malignant. There are different types of melanonychia. The most common type is longitudinal melanonychia. Read on to learn more about the different types of melanonychia and what can cause them.
Brown Line on Nails: Vitamin Deficiencies and Other Causes
网页2023年9月1日 · Brown lines or dark stripes on the length of your fingernails or toenails (longitudinal melanonychia) have many causes—from vitamin deficiencies to cancer. Learn more.
Melanonychia - DermNet
网页What is melanonychia? Melanonychia is brown or black discolouration of a nail. It may be diffuse or take the form of a longitudinal band. Benign longitudinal melanonychia. See more images of melanonychia. Who is at risk of melanonychia? Melanonychia can present in individuals of all ages, including children, and affects both sexes equally.
What Does It Mean if My Fingernails Are a Weird Color?
网页2019年1月16日 · “If your nail is brown or black, the most important thing to worry about is a nail melanoma,” (a.k.a. the most serious form of skin cancer), says Shari Lipner, M.D., Ph.D., a dermatologist and...
How to check your nails for melanoma - American Academy of Dermatology
网页2021年5月7日 · A dark streak. This may look like a brown or black band in the nail — often on the thumb or big toe of your dominant hand or foot. However, this dark streak can show up on any nail. Dark skin next to your nail. When the skin around your nail becomes darker, it could be a sign of advanced melanoma.
Melanonychia: Etiology, Diagnosis, and Treatment - PMC
网页2020年1月13日 · It is characterized by brownish black discoloration of nail plate and is a common cause of nail plate pigmentation. The aetiology of melanonychia ranges from more common benign causes to less common invasive and in situ melanomas. Melanonychia especially in a longitudinal band form can be due to both local and systemic causes.
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