[Alopecia areata: appropriateness of various laboratory parameters].

Over the past four years 190 patients with alopecia areata have been examined: hematochemical parameters have been assessed in each patient and the possible presence of organ-and non-organ-specific circulating antibodies has been assayed. No significant alterations were found with regard to the different hematochemical parameters examined. On the other hand, a highly significant increase of anti-gastric parietal cell autoantibodies was observed in patients with alopecia areata and alopecia universalis in comparison to normal control subjects; in addition, patients with alopecia universalis showed a significant increase of anti-thyroid antibodies.