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Aetiology

Authoring team

Exact cause of perioral dermatitis is unknown (1). Some factors implicated in its pathogenesis include:

  • topical corticosteroids - directly or indirectly (eg the area has been touched by fingers that are treating another part of the body with steroid creams)
  • inhaled steroids in asthmatic children,
  • tartar control toothpastes
  • microbiologic factors (eg, Candida, Demodex, or fusiform bacteria)
  • topical cosmetics, moisturizing creams and their occlusive effects which cause the proliferation of skin flora
  • some have noted flare ups during premenstrual period, pregnancy and when they are taking oral contraceptives (1,2)

Reference:

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