title: Palpable purpura in leukocytoclastic vasculitis.
abstract: Palpable purpura is a clinical finding that represents antigen-antibody deposition along small cutaneous vessels, resulting in extravasation of blood cells into the interstitium. The most common cause of palpable purpura is leukocytoclastic vasculitis, a disease involving cutaneous postcapillary venules. Although often idiopathic, leukocytoclastic vasculitis has been associated with numerous infections, drugs, rheumatic diseases and malignancies.
mesh_terms: D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D007962:Leukocytes; D008297:Male; D008875:Middle Aged; D011693:Purpura / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D014397:Tuberculosis, Pulmonary / Q000150:complications; D014657:Vasculitis / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy
chemical_list: D007166:Immunosuppressive Agents