Väätäinen N, Fräki JE, Hyvönen M, Neittaanmäki H.
DOI: 10.2340/0001555563169170

A patient suffering from purpura is reported, having persistent linear deposition of IgA along the basement membrane zone in both lesional and healthy skin. The ordinary histopathology showed the picture of purpura pigmentosa with perivascular lymphocytes, polymorphonuclear cells and extravasated erythrocytes. No blisters have been observed.