A poisoning is caused by an external substance. Some doubts remain on the exact classification place: USN takes it as a very general 'Phenomenon'; on the other hand, no poisoning is possible without some biologic function which affects the organism being injured. We provisionally take it as a straight biologic function.
(=> (Poisoning ?Self) (And (Exists (?A) (And (Bearer ?Self ?A) (Or (Anatomical-Structure ?A) (Organism ?A)))) (Exists (?B) (And (Cause ?Self ?B) (Substance ?B))) (Forall (?C) (=> (Complicates ?Self ?C) (Or (Disordered-Function-Caused-By-Anatomical-Abnormality ?C) (Pathologic-Function ?C) (Injury-Or-Poisoning ?C)))) (Forall (?D) (=> (Result-Of ?Self ?D) (Or (Behavior ?D) (Health-Care-Activity ?D))))))