Hypersensitivity syndromes; erythema multiforme, erythema nodosum, urticaria.
D004892:Erythema Multiforme; D004893:Erythema Nodosum; D006801:Humans; D013577:Syndrome; D014581:Urticaria / Q000209:etiology*
ERYTHEMA MULTIFORME; ERYTHEMA NODOSUM; URTICARIA/etiology and pathogenesis