Pustules break out chiefly in the spring season. Of these there are several kinds. For sometimes there is a certain asperity over the whole body, or a part, resembling those pustules, which are occasioned by a nettle, or from sweat; the Greeks call them exanthemata[FI]. And they are sometimes red, at other times of the same colour with the skin. Sometimes a great many grow resembling vari, sometimes larger. The pustules are livid or pale, or black, or otherwise different from the natural colour; and there is a humour contained in them. When they are broke, the flesh below appears as it were ulcerated. By the Greeks they are called phlyctænæ helcodes[FJ]. They arise either from cold, or from fire, or from medicines. [FI] ἐξανθήματα. [FJ] φλύκταιναι ἑλκώδεις. The phlyzacium[FK] is a pustule somewhat harder, of a whitish colour, and sharp pointed. What is squeezed from it is moist. The pustules sometimes turn to small ulcers, either dry or moist; and sometimes attended only with an itching, at other times with an inflammation and pain: pus or sanies issues from them, or both. And this occurs in children chiefly; seldom in the trunk of the body; often in the extremities. [FK] φλυζάκιον. The worst kind of pustule is that, which is called epinyctis[FL]. Its colour either inclines to livid, or is a dark brown, or white. There is a violent inflammation round it; and when it is opened, a mucous ulceration is found within, in colour resembling its humour. The pain of this is greater than in proportion to its bulk; for it is not larger than a bean. And this likewise grows in the extremities, and generally in the night-time: whence the Greeks have given it the name of epinyctis. [FL] ἐπινυκτὶς. Now in the cure of all pustules, the first thing is to walk much, and to take exercise: if that cannot be complied with, to use gestation. The second rule is, to lessen the quantity of food; to abstain from every thing acrid and extenuating. And nurses ought to observe the same rules, if their sucking child is thus affected. Besides these, one, that can bear it, if the pustules be small, ought to sweat in the bagnio; and at the same time to sprinkle nitre over them; and to anoint the part with a mixture of wine and oil; then to go into the bath. If no benefit accrues from these, or if the pustules be of a larger kind, a lentil must be applied, and when the surface of the skin is taken off, we must have recourse to lenient medicines. After the lentil, the epinyctis is to be treated with blood-herb, or green coriander.