... tightness of throat, epigastric pain, and then symptoms of irritant poisons generally. Chronic poisoning (iodism) is characterized by coryza, salivation, and lachrymation, frontal headache, loss of appetite, marked mental depression, acne of the face and chest, and a petechial eruption ... — Aids to Forensic Medicine and Toxicology • W. G. Aitchison Robertson