Rosacea on the chin of a 74 year old male patient. Rosacea usually begins as 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 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. Individuals with fair skin who tend to flush or blush easily are believed to be at the greatest risk. Treatment is with a long-term course of antibiotics. However, rosacea tends to recur for years before disappearing completely.