Foaming at the mouth can be seen with a number of conditions.

Situations where foam can be seen at the mouth:

(1) severe pulmonary edema

(2) freshwater drowning

(3) seizure disorder

(4) swallowing 35% hydrogen peroxide

(5) swallowing another type of foaming agent

(6) gag (placing a foaming agent in the mouth)

(7) penetrating chest injury (with blood entering the tracheobronchial tree)



• Baxendale and O'Toole consider excessive foaming at the mouth during a seizure is a myth but there appear to be enough descriptions to suggest that it can occur.

• Foaming at the mouth in toxic exposures (snake bite, etc) is often due to cardiopulmonary dysfunction with pulmonary edema.

To read more or access our algorithms and calculators, please log in or register.