Dermatosis papulosa nigra
The lesions of dermatosis papulosa nigra are dark papules of usually less than 2 mm diameter, that can be diffuse on the malar, preauricular, and forehead skin.
Histologically, there are similarities with seborrheic keratoses.
First described in African-Americans, similar lesions are common in Asians and dark-skinned Caucasians.
- Lesions respond well to electrofulguration and to the Q-switched ruby or carbon dioxide lasers.
- Treatment must be gentle to avoid post-inflammatory hypopigmentation.