The primary histologic lesion of seborrheic dermatitis and psoriasis.
D016918:Arthritis, Reactive / Q000473:pathology; D002196:Capillaries; D012628:Dermatitis, Seborrheic / Q000473:pathology*; D005122:Exudates and Transudates; D006801:Humans; D007962:Leukocytes; D011565:Psoriasis / Q000473:pathology*