2F20.0/D22 Common acquired melanocytic naevus



Common acquired melanocytic naevi (CAMN) are benign neoplasms that arise from melanocytes, the pigment-producing cells located in the skin. They are the most common type of skin lesion and can occur in any age group.


Diagnosis of CAMN is usually based on physical examination of the lesion and its appearance. A skin biopsy may also be performed to rule out any other conditions.

Differential diagnosis

Differential diagnosis of CAMN include other skin lesions such as seborrheic keratosis, eccrine poroma, and Spitz nevus.


CAMN usually does not require treatment and is managed with monitoring for any changes in size, colour or shape that could be indicative of a more serious condition.


The prognosis for CAMN is good, as they are benign lesions that do not typically spread or become cancerous. If a suspicious lesion is identified, further investigation may be necessary.

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