But if these methods afford small relief, it is proper to clip the hair close to the skin: then it must be considered, what was the cause of the pain. If heat, it is expedient to pour a great quantity of cold water over the head, to apply a concave sponge frequently dipped in cold water and squeezed, to anoint with rose-oil and vinegar, or rather to apply sordid wool dipped in these, or some other cooling cataplasms. But if cold has brought on the disorder, it is proper to pour upon the head sea water, or at least salt water warm, or a decoction of laurel; then to rub the head briskly; next to embrocate it with warm oil, and to cover it. Some even bind it up; others clap on cervicalia(5) and cloaths, and thus are relieved; others are assisted by hot cataplasms. And therefore, where the cause is not known, it is proper to try, whether cooling things, or heating give most relief, and to use those, which upon experiment shall be found best. But if the cause cannot be discovered, it is proper to pour over the head first warm water, as has been prescribed, or salt water, or a decoction of laurel, then cold vinegar and water. The following methods are of general use in all inveterate pains of the head: to excite sneezings, to rub the lower parts briskly, to use gargarisms of such things as promote saliva, to apply cucurbitals to the temples and back of the head, to sollicit an hæmorrhage from the nose, to vellicate the temples now and then with resin, and by applying mustard to ulcerate those parts, that are affected, first putting linen below, that it may not corrode too severely, or to make ulcers where the pain is, by hot irons, to eat always moderately, and drink water; when the pain is abated, to go into the bath, there to pour over the head first a great quantity of hot water, and then cold. If the pain is wholly removed, to return even to the use of wine; but ever after to drink water before any thing else. That kind is different, where a humour is collected within the head. In this it is necessary to clip to the skin; then to apply mustard, so as to ulcerate it; if that does not prove effectual, the knife must be made use of. The management must be so far the same with dropsical cases, that the patient must be exercised, sweated, briskly rubbed, and take such food and drink, as are powerful diureticks. [Sidenote: _Of the cynicus spasmus._] There is a distemper incident to the face, which the Greeks call cynicus spasmus[CE]. It comes on an acute fever. The mouth is turned aside with a kind of grin, and therefore it is nothing else than a distortion of the mouth. There is also a frequent change of colour in the face and the whole body, and a great propensity to sleep. [CE] κυνικὸς σπασμὸς.