If you have a rash around your mouth, you may have perioral (pair-ē or-əl) dermatitis (der-mah-tie-tis).
This rash often looks like small, red, acne-like breakouts in people with light-colored skin and skin-colored breakouts in people who have skin of color.
Whether red or skin colored, this rash can itch. Sometimes, the rash causes a burning sensation.
It’s also possible that you won’t have any itching or burning. You’ll likely have dry and flaky skin where you have the rash, though.
While this rash often develops around the mouth, it can also appear around your eyes or nose. You may have the rash around your mouth and nose or your nose and eyes.
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Some people get it around their genitals. If you have the rash around any of these areas, your dermatologist may say you have peri-orificial (pair-ē or-əh-fish-ul) dermatitis.
Peri-orifical dermatitis is actually a more accurate name for this rash. “Peri” means “around” and “orifical” refers to “an opening.” No matter where this rash appears though, people often refer to it as perioral dermatitis. That literally means peri (around) oral (the mouth).
° Author : American Academy of dermatology