Delayed skin reaction caused by a coelenterate.

We report a delayed skin reaction, histologically characterized by liquefaction degeneration of the basal layer, which was observed in a 30-year-old man returning from Guadeloupe. It was most likely due to contact with a marine animal.

[Acquired reactive collagen disease in the adult: successful treatment with UV-B light]. / Erworbene reaktive Kollagenose des Erwachsenen: erfolgreiche Behandlung durch UV-B-Licht.

A 77-year-old patient with diabetes and progressive renal failure suffered from severe pruritus accompanied by umbilicated, keratotic papules corresponding clinically and histologically to reactive perforating collagenosis. UV-B light therapy considerably improved the pruritus and the skin lesions.