(From and night). A pustule which arises in the night resembling a furunculus; according to Sauvages, these are pustules of a blackish-red colour, crowding together, three or four lines in diameter, affecting chiefly the legs, and very frequently-painful, chiefly in the night. He enumerates two species:

Epinyctis vulgaris and pruriginosa. Celsus considers it as malignant, and describes it as of a whitish or somewhat livid colour, with a violent inflammation around it; affecting the hands, arms, and thighs. The ancients rank it with the terminthus, which is rather less; and it is sometimes described as of a dusky red, occasionally of a livid and pale colour, with great inflammation and pain. In a few days it is said to burst, and separate in a slough. When opened, there is an efflux of sanies; a deep ulcer follows, and the pain is more violent than in proportion to its magnitude, for it is scarcely as large as a bean; according to Paulus and AEtius, chiefly troublesome in the night. Celsus recommends that in this, and all other kinds of pustules, the patient walk much, abstain from all acrid food, and be very sparing in his diet. Sauvages recommends bleeding, a cooling diet, antiphlogistic, cathartic, emollient gruels, with the application of cataplasms of mallow flowers, and lintseed.