What Causes Longitudinal Melanonychia?
Causes include nail infections, trauma, infection, and cancer. As per its name, longitudinal melanonychia is recognized by the appearance of a pigmented stripe, either partial or complete, running length-wise along the nail bed.

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Then, is longitudinal Melanonychia normal?

More commonly, melanonychia results from melanin produced by melanocytes in the matrix and may be a normal variant in darker-skinned people. Longitudinal melanonychia occurs with melanocytic macule, junctional or compound melanocytic nevus, or melanoma.

Secondly, how common is Melanonychia? 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 people. White-skinned people are less commonly affected.

Also to know is, is Melanonychia a cancer?

The outlook for most benign melanonychia is good, and in most cases, does not require treatment. Cancer of the nail is challenging to catch in the early stages because of its similarities to the benign causes of melanonychia.

What is benign Melanonychia?

The most serious disease of the nail unit, melanoma, primarily presents with melanonychia. However, melanonychia most often occurs as a result of benign etiologies such as nail matrix melanocytic activation, nail matrix melanocytic hyperplasia, and nail invasion by melanin-producing pathogens.

Related Question Answers

Will longitudinal Melanonychia go away?

The border is clearly defined and less than 3 millimeters (mm), which is roughly 1/10th of an inch, in width. Another sign that longitudinal melanonychia is benign is the yellowish fading of color along the periphery of the stripe. Melanonychia caused by a serious disease doesn't typically fade.

How common is nail cancer?

Melanoma of the nail unit is rare, accounting for only about 1% melanoma in white-skinned individuals. Although no more common in dark skin than fair skin, it is the most common type of melanoma diagnosed in deeply pigmented individuals. It is most diagnosed between the age of 40 and 70 [1].
Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.