Avicenna has treated at great length of the subjects of this Section. Among other things he recommends the celebrated theriac, which contained a very diffusible stimulant oil. His treatment otherwise resembles our author’s. The same may be said of Haly Abbas. For loss of memory, Alsaharavius recommends the application of fragrant and stimulant oils to the head, along with general treatment.
Cælius Aurelianus and Octavius have not treated of carus by name; but, according to Prosper Alpinus, the Methodists entertained similar opinions of the disease to the other sects. (De Med. Meth. x, 5.)
Procopius states that carus was a common symptom of the fatal plague which prevailed in the reign of Justinian. (Persic. ii.)
The philosophers, as well as the physicians, taught that loss of memory is often connected with disease of the posterior portion of the brain. See, in particular, the Commentary of Philoponus on Aristotle (de Anima, i.)
SECT. XII.—ON VERTIGO.
Vertigo is occasioned by a cold and viscid humour seizing upon the brain, whence the patients are ready to fall down from a very slight cause, such as sometimes from looking at any external object which turns round, as a wheel or top, or when they themselves are whirled round, or when their head has been heated, by which means the humours or spirit in it are set in motion. And sometimes it is occasioned by the anterior cavities of the brain being compressed in perforations of the skull for fractures, in which cases there are violent pains. When it is a primary affection of the head, it is preceded by strong pain in the part, by drowsiness, and noises in the ears; and some have either the sense of smell or of taste impaired. But in those cases which arise from sympathy with the orifice of the stomach, heartburn accompanies and nausea follows.
The cure. Those affected with vertigo are to be roused at the onset, by using strong-scented things of a suitable nature, by frictions, and such like; and, during the remission, for the recovery of the complaint, they ought first to be bled, and then purged with hiera. And after an interval we must use an acrid clyster of centaury, or the decoction of colocynth. After such evacuations, we are to apply to the back part of the head cupping-instruments with scarifications, and afterwards use masticatories and sternutatories. When there is heat in the head and noises in the ears, inasmuch as they are occasioned by hot vapours diffused in the arteries, we must have recourse to anteriotomy behind the ears, as will be described when treating of surgical matters.
Commentary. See Galen (de Loc. Affect. iii, 12); Aretæus (Morb. Chron. Curat, i, 3); Aëtius (vi, 7); Oribasius (Synops. vi, 5); Actuarius (Meth. Med. vi, 2); Nonnus (35); Cælius Aurelianus (Morb. Chron. i, 2); Octavius Horatianus (ii, 2, 3); Serapion (i, 3); Avicenna (iii, 1, 5); Mesue (ii, 13); Haly Abbas (Theor. ix, 5; Pract. v, 20); Alsaharavius (Pract. i, 2, 6, 7); Rhases (Divis. 5; Contin. 1.)
Galen agrees with Archigenes that vertigo may either be a primary affection of the brain, or may proceed from sympathy with the mouth of the stomach. Archigenes pretended to distinguish between the two cases in the manner described by our author, that is to say, when the disease is preceded by noises in the head, stupor, loss of the sense of smell, or of any other sense, he concluded that the disease was a primary affection of the brain; whereas, if preceded by nausea and heartburn, he believed that it had its origin in the stomach.