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...
What's Causing That Black Line on Your Nail - Healthline
网页2024年2月5日 · A small black line that forms vertically underneath your nail may be a splinter hemorrhage, while horizontal lines may be melanonychia. These may be harmless or a sign of a more serious health...
7 fingernail problems not to ignore - Mayo Clinic
网页2023年6月30日 · Beau's lines are grooves that run across the nails. They can appear when nail growth temporarily stops due to injury or illness. Beau's lines may be caused by: Infections. Diabetes that is not well controlled. Conditions in which narrowed blood vessels lower blood flow to the arms and legs. This is called peripheral artery disease.
Black line on the nail: Causes, treatments, and pictures
网页2024年4月24日 · Most black lines on the fingernails and toenails are not cause for concern. These lines are fairly common among people with darker skin tones. However, they can be a sign of subungual...
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...
Black Line on Nail: Causes, Treatment, and More - Verywell Health
网页2023年8月1日 · Melanonychia is the most common cause of a black line on a nail. This condition is characterized by black or brown discoloration of the nail plate. It can affect just one nail or multiple nails on the fingers and toes. It accounts for nearly half of all cases of nail discoloration.
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.
Black Line on Nails: Causes, Treatment, and More - Healthgrades
网页2022年10月30日 · A black line on the nail describes a narrow, longitudinal stripe that forms under the nail plate. It often results from splinter hemorrhages, longitudinal melanonychia, and, in some cases, subungual melanoma. Doctors often diagnose the cause of nail marks by examining the nails and reviewing your medical history.
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...
Black Lines on Nails: Causes and Treatments - POPSUGAR
网页2024年1月30日 · According to Healthline, a splinter hemorrhage is a "narrow black line that has formed vertically underneath your nail." It can look black or reddish brown in color, doesn't change appearance...
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