title: Anaphylaxis and systemic mastocytosis.
mesh_terms: D000707:Anaphylaxis / Q000209:etiology*; D001516:Bees; D006801:Humans; D007299:Insect Bites and Stings / Q000150:complications*; D008297:Male; D008875:Middle Aged; D014582:Urticaria Pigmentosa / Q000150:complications*