SECT. XLVIII.—ON COUGH IN FEVERS.
We must endeavour to remove a cough in fevers, more especially in such as come on with rigors, for it exasperates the fever when it is subsiding. We must give lozenges from boiled honey to hold below the tongue, for these melt and remove the substances which obstruct respiration. The time for using them is at the acme of the paroxysm, and a short time before the attack. Well-boiled hydromel must likewise be given. When there is no suspicion of the nerves being affected, in process of time you may give oxymel with confidence, or if not it, the decoction of hyssop, which is a remedy also for rigors. If the fever is not of the ardent kind, you may give castor, which is also of use to the nervous system. Electuaries may be used, made of the kernels of the common and wild pine, iris, linseed, bitter almonds, and nettle-seed. But the most of these may be mixed with the food. Turpentine-rosin should be given in an egg. To the chest and the parts about the trachea, apply a sulphurated woollen cloth, and oil of rue, or of iris, or of dill. Tight ligatures long applied are excellent for stopping cough, I mean to the middle and extremities. Nor will it be unsuitable to use for the cough stavesacre dried, which may be chewed with dried grapes or mastich. The extremities may be rubbed, chafed, and bound with ligatures, and afterwards the retracted parts unbound. But if the cough annoys, owing to the acrid nature of the fever, we must use a gargle of tepid water. Cold water also is often useful; and, in like manner, gargles of oxycrate, or of the decoctions of dates, roses, or liquorice. Moderately cooling things are also to be laid over the bowels and heart.
Commentary. Galen gives some ingenious remarks on the causes of coughing. He states that when any substance becomes fixed in the trachea, as it is a cartilaginous and hard tube, and incapable of contraction, nature brings on coughing, by which a violent expiration of air is induced. A cough, then, is nothing but a violent expiration by which nature endeavours to expel any body that obstructs the air-passages; and, when she cannot accomplish this at the first effort, she repeats it once and again until she effect her purpose. He goes on to state, that such fluids as are very watery, instead of being brought up, are merely divided or cut asunder by the current of air, while such as are thick and viscid, adhere so closely to the sides of the windpipe that they cannot be removed, and hence violent efforts are necessary to effect the discharge of them. (De Causis Sympt. ii, 4.) He treats fully of compositions for coughs in his work ‘De Comp. Med. sec. Loc.’ (vii.) See [the 28th Section of the Third Book].
Avicenna recommends cough pills and lohocks made with poppies, the cold medulla of fruit, starch, and the like. (iv, i, 2.)
The prescriptions of Serapion contain liquorice, sweet almonds, tragacanth, and the like. (De Antidotis, vii, 17.) Those of Haly Abbas are very similar. (Pract. iii, 22.)
A receipt is given by Rhases for cough pills, the principal ingredients of which are tragacanth, sweet almonds, poppy seed, gum Arabic, and Armenian bole. (Divis. i, 52.) Many such receipts are given by Myrepsus.