Don’t try to diagnose it on your own

Dr. Google may lead you down the wrong path with this rash. “Perioral dermatitis can mimic other conditions such as seborrheic dermatitis, rosacea, atopic dermatitis, and acne,” says Chris G. Adigun, a dermatologist at Dermatology & Laser Center of Chapel Hill. “Thus, it is imperative to have a board-certified dermatologist evaluate your skin.” Is it eczema? Here’s how to tell.

See a doctor for antibiotics

For milder cases, antibiotics could do the trick. “Perioral dermatitis can be effectively treated with topical and oral antibiotics,” Dr. Adigun says. “Often treatment can be as short as one month in duration for milder cases.” Learn when you do—and don’t—need antibiotics.