HORDEOLUM. STYE. ACNE.
Like acne of the skin in general, this consists in inflammation and suppuration of a hair follicle and sebaceous gland. The whole lid or a large part of it may be swollen, but by stroking it with the finger, a hard, rounded, very tender spot will be detected and as the disease advances this develops a minute collection of pus. A specially wide orifice favors the entrance of the pus microbes, and the onset of the disease. It has been noted in dogs (Fröhner).
For abortive treatment Fick recommends dry heat from a pocket handkerchief or a heated teaspoon. If pus is present it must be evacuated, and recurrence guarded against by cleanliness and antiseptics. Use pyoktannin solution (1 ∶ 1000), or mercuric chloride (1 ∶ 5000) or yellow oxide of mercury ointment.