Yasuda H, Kumakiri M, Miura Y, Tsuchiya K, Shiratori A
Hokkaido Igaku Zasshi. 1983 Nov;58(6):617-21.
Ten patients with primula dermatitis observed in Hokkaido were reported. All patients presented positive patch test reactions to a part of an extract of primula obconica. Postlesional pigmentation is prominent in patients with recurrent dermatitis. Histologic features were liquefaction degeneration of a basal layer of the epidermis and incontinentia pigmenti histological, i.e., lichenoid tissue reaction.
