SECT. XLIX.—ON SNEEZING.
Sneezing frequently occurring in fevers is troublesome, for it determines to the head and weakens the strength, and, in some cases, it produces a discharge of blood. Such are the bad effects of sneezing, which ought therefore, to be contended against. It is restrained by rubbing the nose, forehead, and eyes; by yawning, frequent friction of the roof of the mouth, eructation, stretching of the loins, raising the head, turning to the side, gently chafing the extremities, anointing the masseter muscles, pouring hot oil into the ears, applying a warm cushion under the chin. It is proper to avoid being roused suddenly from sleep, and also smoke, dust, acrid smells, pepper, castor, mustard, and mint. The smell of apples and polenta is proper, for it blunts the desire of sneezing. The empty sea-sponges do the same. When there is a frequent desire of sneezing without the ability, let the lips be composed, let the patient smell to acrid substances, and let the mind be relaxed.
Commentary. Galen explains that sneezing is a still more violent effort of nature than coughing, and that its intention is to remove irritating matters from the parts about the nose. (De Caus. Sympt. ii, 4.)
Avicenna gives ample directions for the treatment of sneezing; but they are evidently copied from our author. (iv, 1, 2.) The same may be said of Haly Abbas. (Pract. iii, 22.) Rhases recommends us to give warm gruel internally, to pour warm water on the head, and to apply oil of gourd, of roses, and the like, to the nostrils. (Cont. xxxi.)
Cassius Medicus discusses the question why rubbing the nose and eyes stops sneezing. He supposes that it is by occasioning a discharge from these parts, whereby the exciting cause is removed. (Probl. 45.)