[Retrospective analysis of senzibilisation to chrom, nickel and cobalt over the period 1980-1989 year].

Over the periof from 1980-1989 year at Clinic of Dermatovenerology in Nis, 1988 patients with contact allergic dermatitis were tested with standard allergen batteries. Senzibilisation to metals - chrom, nickel and cobalt was proved in 206 (10,36%) cases, 132 (64,08%) males and 74 (35,92%) females. The most frequent allerge was potassium bichromate - 155 (7,79%) cases, and then nickel sulphate - 82 (4,12%). Positive patch test only to one metal had 148 (71,84%) patients, 44 (21,36%) to two metals and 14 (6,80%) had positive patch test to all three metals.