The importance of sinus infection in asthma has been thoroughly discussed in the case of adults. However, it is comparatively recently that the rôle of sinus infection in children has been at all observed, and comparatively little work has been done on these lines with asthmatic children. Ruskin1 discussed the problem of sinusitis in children and concluded that the condition is much commoner than the textbooks would have one believe. He thought that every case of acute rhinitis involves the accessory nasal sinuses to some degree.
According to Hark,2 who published a report on 394 autopsies on children in whom he had opened the accessory nasal sinuses, he found evidence of disease in 62 cases. Sinus infections, according to Gottlieb,3 may produce pulmonary symptoms in four ways: (1) by direct extension, purulent droppings from the pharynx directly infecting the tracheal and bronchial mucous membranes; (2) by blood