Facial Dermatoses

Perioral Dermatitis: Steroid-Induced Flares, Barrier Disruption & Zero-Therapy Protocols

Author: Mallikarjun R (Founder) & Medicus Labs Medical Team • Review: 10 min read • ✓ Peer-Referenced

1. Etiology & The Topical Steroid Paradox

Perioral Dermatitis is an inflammatory facial dermatosis characterized by 1–2mm micro-papules and pustules grouped around the mouth, nose, and periorbital tissue with a pathognomonic clear zone of normal skin immediately surrounding the vermilion border of the lips. Frequently initiated or exacerbated by fluorinated topical corticosteroid misuse, heavy occlusive moisturizers, or fluorinated toothpastes.

2. The "Zero-Therapy" Protocol & Medical Management

Cessation of all topical cosmetics, occlusives, and steroids ("zero therapy"). Active treatment includes topical Metronidazole (0.75%), Azelaic Acid (15%), or oral Doxycycline (50–100mg daily for 4–8 weeks) for severe eruptions.