Severe hypersensitivity to sulphamethoxypyridazine.
D003875:Drug Eruptions / Q000209:etiology*; D013421:Sulfamethoxypyridazine / Q000633:toxicity*
D013421:Sulfamethoxypyridazine
DERMATITIS MEDICAMENTOSA/etiology; SULFAMETHOXYPYRIDAZINE/toxicology