Contrary to commonly held opinion, SD may be associated with some diseases and/or triggered by some conditions. In this study, a close temporal relationship between the appearance of SD and psychic factors, drug reactions and scabies was documented. The relation between SD and atopy, hyperthyroidism, diabetes mellitus, menopause and glomerulonephritis seemed unclear.

We suggest that as negative control tests were not performed along with the APST in previous studies, the APST showed a high rate of positivity. Thus, the use of APST for evaluating autoreactivity in clinical practice is not superior to the use of ASST and further studies should be conducted.

There was no statistically significant improvement in streptococcus associated guttate psoriasis with or without a course of oral penicillin or erythromycin.

These findings may indicate that intradermal antigens used in this study were more effective in inducing the Koebner phenomenon than injury alone. Furthermore, we observed that there is no meaningful difference between psoriatic and nonpsoriatic subjects in developing cutaneous cellular immune reactions.

No abstract