Occupational asthma induced by tall oil in the rubber tyre industry


Dr S. M. Tarlo, The Toronto Hospital, Western Division, EC4-008, 399 Bathurst Street, Toronto, Ontario M5T 2S8, Canada.


A worker in the rubber tyre industry is described with occupational asthma from exposure to a solution of tall oil, a pine resin, confirmed by specific inhalation challenge. This supports studies of contact dermatitis which have suggested abietic and dehydroabietic acid oxidants to be the cause of colophony induced allergic reactions.