[The ultrastructural changes in the nerve fibers of the skin in psoriasis].

Electron microscopic examination of the upper layers of the derma in skin biopsy specimens from 20 patients with psoriasis, collected both in foci of lesions and those of apparently intact skin, has revealed that changes in amyelinic nerve fibers are more marked in foci of involvement. Here they may be partly explained by inflammatory processes; but since the nerve fibers are also significantly changed in apparently intact skin, we may suppose that these changes are due to other factors as well.