why do i have brown lines in my nails

ByMaksim L.

Sep 10, 2022

What causes brown lines on nails?

Melanonychia is caused when the pigment cells, called melanocytes, deposit melanin — brown-colored pigment — into the nail. These deposits are usually grouped together. As your nail grows, it causes the stripe of brown or black to appear on your nail.

What does Brown vertical line on nail mean?

Longitudinal melanonychia due to excess melanin is most common in people of African descent. It can also occur with nail trauma, body-wide disease, or nail infections. The cause of melanonychia can be usually diagnosed by a dermatologist, a physician who specializes in treating skin, hair, and nails.

What deficiency causes brown nail lines?

Melanonychia can be caused by inflammatory skin diseases that affect your nails. It can also be caused by inflammation due to friction from shoes and biting your nails. Poor nutrition. Malnutrition can cause melanonychia, especially a lack of protein, vitamin D, or vitamin B12.

Should I worry about melanonychia?

Melanonychia is a very worrisome entity for most patients. 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.

What do nails look like with anemia?

Spoon nails (koilonychia) are soft nails that look scooped out. The depression usually is large enough to hold a drop of liquid. Often, spoon nails are a sign of iron deficiency anemia or a liver condition known as hemochromatosis, in which your body absorbs too much iron from the food you eat.

Is melanonychia always cancerous?

Melanonychia, brown or black pigmentation in the nail plate, can frequently present a diagnostic challenge for the dermatologist. While most causes of melanonychia are benign, it is important to recognize when the diagnosis is malignant or uncertain.

How long does it take for melanonychia to go away?

In the majority of iatrogenic melanonychia cases, the pigmentation develops 3-8 weeks after the initiation of treatment and fades away 6-8 weeks following treatment cessation [3].

Are all melanonychia cancerous?

Most clinical cases of melanonychia are benign lesions; however, some cases are finally diagnosed as subungual melanomas that require specific treatment and extensive care. Subungual melanoma is a malignant disease with a poor prognosis of only a 30% 5-year survival rate and a 13% 10-year survival rate 5, 6.

Is melanonychia reversible?

It is usually fully reversible, but can take six weeks or more to resolve. Melanonychia is an uncommon side effect of hydroxyurea; reported rarely in patients with myeloproliferative neoplasms (2.32%).

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