2F20.Z/D22 Melanocytic naevus, unspecified



Melanocytic naevus is caused by an overgrowth of melanocytes, which are the cells responsible for producing melanin, the pigment that gives skin its colour. The naevus can develop anywhere on the body and is usually harmless.


A dermatologist can diagnose a melanocytic naevus by examining the skin and looking for a pigmented spot or patch. In some cases, a biopsy may be needed to confirm the diagnosis.

Differential diagnosis

Melanocytic naevus is often confused with other skin conditions such as melanoma, freckles and moles. A biopsy may be needed to differentiate between these conditions.


Melanocytic naevus does not usually require treatment as it is typically harmless. However, if the naevus is large, itchy or causing other symptoms, a doctor may recommend cryotherapy or topical medications to reduce the size or relieve the symptoms.


Melanocytic naevus is generally a benign condition and has a good prognosis. The naevus typically does not cause any serious health concerns and can be managed with minimal treatment.

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