Capillaropathy and capillaroneogenesis in the pathogenesis of rosacea.

Background: Dilatation of vascular vessels in rosacea has generally been attributed to yielding to deranged connective tissue. In contrast, in a previous study a degrading effect of insufficient vascular vessels in connective tissue has been demonstrated in connection with diabetic microangiopathy. In yet another paper, it was demonstrated that the fusing of damaged capillaries, which had lost part of their adjacent walls due to functional inadequacy, led to the formation of dilated vessels.

Malassezia furfur in infantile seborrheic dermatitis.

Malassezia furfur is important in the pathogenesis of a number of dermatologic diseases including seborrheic dermatitis in adults. It has also recently been suggested that M. furfur might be the etiologic agent in infantile seborrheic dermatitis (ISD).

Essential fatty acids in infantile seborrheic dermatitis.

Background: In infantile seborrheic dermatitis (ISD) several different pathogenetic mechanisms have been proposed.

Objective: The purpose of the study was to investigate the importance of essential fatty acids (EFAs) and their metabolites in the origin of ISD.

Methods: The serum EFA patterns of 30 children with ISD, 1 to 6 months of age, were studied for 2 to 5 months.