Bullous delayed pressure urticaria; pressure testing may produce a systemic reaction.

We report a patient with bullous delayed pressure urticaria (DPU) and chronic idiopathic urticaria (CIU) in whom a systemic reaction occurred. The reaction occurred 18 h after a pressure test had been performed on the right forearm. Blood histamine levels were more elevated in the sample taken from the forearm on which the test had be applied.

[Contact thermometry of lesions in alopecia areata].

The contact thermometry has been performed at the center of lesions, at the periphery and at the adjoining healthy skin in 10 patients with alopecia areata (AA) of the scalp. The lowest temperature was recorded in the center of lesions (approximately 33.55 degrees C), slightly higher in the periphery (approximately 33.

[Clinical and laboratory studies of cholinergic urticaria].

The clinical and laboratory study of 80 patients (75 males, 5 females) with cholinergic urticaria (CHU), treated from 1971 to 1996 is presented. The mean age at CHU occurrence was 22.3 years (10-50).