Abstract
Inhalation of inert particles may in susceptible subjects with bronchial asthma result in reflex bronchoconstriction mediated through the vagal nerves. A case of severe asthmatic reaction with bronchial spasm in a 60‐year‐old man with intrinsic asthma after inhalation of disodium cromoglycate powder (Lomudal®) during long‐term treatment is reported. The mechanism is considered to be reflexogenic. Because of the variability in individual susceptibility during long‐term treatment, inhalation therapy should always be given with close attention to asthmatic exacerbations.