[Melena of allergic origin].
D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006470:Hemorrhage; D006801:Humans; D008499:Medical Records; D008551:Melena / Q000209:etiology*; D014581:Urticaria
HEMORRHAGE, GASTROINTESTINAL/etiology; MELENA/etiology; URTICARIA/case reports