The Koebner phenomenon in anaphylactoid purpura.
The Koebner phenomenon, often a feature of psoriasis, lichen planus, warts, and erythema multiforme, is documented in a patient with anaphylactoid purpura.
D006801:Humans; D011695:IgA Vasculitis / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D008875:Middle Aged; D011312:Pressure; D012867:Skin / Q000293:injuries*; D013290:Streptococcal Infections / Q000150:complications; D013848:Thigh