Rosacea. Red skin rash and pustules (white) on the face of a patient suffering from rosacea. Rosacea usually begins from a temporary flushing of the face, for example after drinking alcohol. It then develops into a permanent reddening of the skin. This reddening may be accompanied (as here) by pustules (pus-containing blisters) that resemble acne. The cause of this skin condition is usually unknown, but it can result from overuse of corticosteroid creams. Treatment is with a long- term course of antibiotics. However, rosacea tends to recur for up to 10 years before disappearing completely.