Perioral dermatitis is a rash or irritation of the skin appearing as small red bumps with mild peeling, itching and sometimes burning that most often affects the area beneath the nose around the lips and chin. The condition is most common in young women, but occasionally affects men and children.
What causes perioral dermatitis is not well understood, but dermatologists believe it may be a form of rosacea or seborrheic dermatitis worsened by sunlight. Medicated creams applied to the face can cause perioral dermatitis. Some types of cosmetics, moisturizers and dental products with fluoride contribute to the condition and it may be aggravated by hormones, sunlight or stress.