I shall describe a deformity of the face caused typically by perennial nasal allergy during the period of growth.
It is well known that chronic asthma can cause gross deformity of the thorax (increased dorsal kyphosis with pigeon-breast). This deformity is more marked and more fixed if it starts during the period of growth than if it is caused by asthma during adult life. Furthermore, I believe that the deformity is not inclined to be marked or permanent in seasonal cases, but characterizes rather perennial cases. The latter con dition obtains in seasonal cases, no doubt, because the deformed thorax can regain normalcy during periods of health. The same conditions are factors in the development of the deformities of the face that I shall describe.
It is apparent that for the normal development of the paranasal sinuses the sinus membranes must be in good order, and the openings from the