EXPERIMENT (PROVING) OF HISTAMINE HYDROCHLORIDE ON HUMANS
Difficulty to concentrate upon or to follow conversation. Bad humour, desires to be left alone. Superficial burning in various parts of face and lips. Nasal and buccal pricking. Tickling in various parts of face and lips. Numbness of lips. Muscles of face feel stiff. Fibrillar jerks visible in various muscles of face and periorbital muscles. Itching in various parts of body and in external auditive ducts.