Asthma due to inhaled chemical agents—amprolium hydrochloride


Dr S. Freedman, Enfield District Hospital, Chace Wing, The Ridgeway, Enfield, Middlesex.


A man with no previous history of allergy or chest disease developed asthma after exposure to a heavy atmospheric concentration of amprolium hydrochloride which is a constituent of a poultry-food additive. Subsequent experimental exposure produced an immediate asthmatic reaction which was inhibited by sodium cromoglycate.