Zinc is a mineral found in many foods in our diet, from oysters to beans. A lack of zinc in the body may be caused by a poor diet or other factors. A black line on the nails is known as a splinter hemorrhage. It can be caused by local trauma, such as getting your finger stuck in a door, or a medical illness like endocarditis or psoriasis.
Another kind of line, which can be black or brown, is known as melanonychia. This condition may be the harmless coloration of your nail. It could be the sign of a health issue, such as trauma or infection. They commonly affect people with liver disease. These are linked to liver disease. White spots on the nails are known as leukonychia. Nails grow very slowly. Your entire fingernail will grow and replace itself within 6 months.
Filling your diet with rich variety, and in some cases supplements, can help your nails grow strong and healthy. The appearance of our nails can sometimes shed light on our health. Your fingernails can reveal a lot about the state of your health. Conditions ranging from stress to thyroid disease may be causing changes in your….
A narrow, vertical black line on your nail is called a splinter hemorrhage. Lines that create a horizontal stripe are called Beau's lines. Learn about melanonychia, including different types and how its caused. Learn more here. White spots on your fingernails are common and usually do not indicate a serious problem. If a person has multiple splinter hemorrhages across several different nails, it could indicate an underlying condition.
A doctor will also ask about medications. If a person has a history of taking blood thinners, such as warfarin or aspirin , this could explain splinter hemorrhages. Sometimes a doctor will take a biopsy or sample of the nail area.
They will send this biopsy to a pathologist, who can identify if any cancerous cells might be present. Most causes of black lines on the nail do not require treatment. Melanoma is an exception. A doctor will usually first remove the area of melanoma as well as the skin under the fingernail.
If the melanoma had spread to the bone, a doctor might recommend amputating the finger to stop the melanoma spreading. It is especially important to see a doctor if a person has a nail that is bleeding and painful or has changes without a known cause. A person should see their doctor if they notice changes to the quality of the nail itself, such as thinning, cracking, or differences in the shape. Most black lines on the fingernails and toenails are harmless.
However, if a person has melanoma, the earlier the condition is diagnosed, the better their prognosis. According to the Journal of Foot and Ankle Research , melanoma that occurs in the foot or toenail has a poorer prognosis than melanoma in other locations, as it may not always be diagnosed early.
Learn about the different types of finger infections and what may cause them. How are the infections diagnosed and can they be prevented? Nails can thicken and become unsightly, but this symptom is not just cosmetic in nature and can progress to causing pain.
Learn about the different…. Nail pitting is characterized by small indents or depressions on the nail surface. It is often linked to psoriasis but can indicate a number of…. Products and services. Slide show: 7 fingernail problems not to ignore. Previous Next 5 of 7 Beau's lines Beau's lines are indentations that run across the nails. Thank you for Subscribing Our Housecall e-newsletter will keep you up-to-date on the latest health information. Please try again. Something went wrong on our side, please try again.
Show references Habif TP. Nail diseases. Louis, Mo. Accessed Nov. Rich P, et al. Overview of nail disorders.
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