Keratosis punctata of the palmar creases (also known as "Hyperkeratosis penetrans," "Hyperkeratosis punctata," "Keratodermia punctata," "Keratosis punctata," "Keratotic pits of the palmar creases," "Lenticular atrophia of the palmar creases," and "Punctate keratosis of the palmar creases") is a common skin disorder that occurs most often in black patients, with skin lesions that are 1 to 5mm depressions filled with a comedo

Comedo

Comedo may refer to:*Blackhead *Whitehead : non inflamed pore blocked with sebum, a symptom of acne vulgaris...

-like keratinous plug.

Treatment with etretinate

Etretinate

Etretinate is a medication developed by Hoffmann–La Roche that was approved by the FDA in 1986 to treat severe psoriasis...

has been described.