DO_rare_slim NCIthesaurus has symptom disease has feature hypersensitivity reaction type III disease purpura hypersensitivity vasculitis SNOMEDCT_US_2025_09_01:195350001 UMLS_CUI:C0151436 GARD:7851 MESH:D018366 NCI:C35119 DOID:9809 disease_ontology ICD9CM:446.2 ICD10CM:M31.0 A hypersensitivity reaction type III disease that is characterized by inflammation and injury to blood vessels and has_symptom purpura, telangiectasia, blistering, urticaria, and ulcers. blister vasculitis urticaria