Clinical toxicology of ‘magic mushroom’ ingestion Postgraduate Medical Journal September 1, 1981 N. R. Peden, Katrina Macaulay, Ann F Bissett et al. 58 citations In 27 cases of magic mushroom ingestion, common physical signs included dilated pupils (mydriasis) and overactive reflexes (hyperreflexia), along with disturbances in perception and mood. The fungus involved was likely Psilocybe semilanceata. DOI: 10.1136/pgmj.57.671.543 Full text Mushroom poisoning Ingestion Mydriasis Clinical toxicology +9