A 26-year-old male patient was referred to our department to update the
treatment for his psoriasis. Physical examination showed typical scaly
plaques on the trunk, limbs, and scalp. In addition to the psoriatic plaques,
we noticed multiple brownish lesions on the fingertips, especially on
D II-IV, of the left hand. On close examination
the lesions appeared punctate, grouped, scaly, and slightly hyperkeratotic
(Fig. 1). The...