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Based on all described it is possible that you have developed periorificial dermatitis (in addition to the nasal vestibulitis) manifested by “rash-like” skin changes around your nostrils, in nasolabial folds, and around mouth. Fucibet cream, that you have been using for four years, might have contributed to it because it contains not only antibiotic (fucidic acid), but a potent (class 3) topical corticosteroid (betamethasone valerate) too. Prolonged use of topical corticosteroids has been linked to development of the periorificial/perioral dermatitis.
This is a clinical status that requires evaluation by a dermatologist before final diagnosis is established and treatment recommended. Only for educational purposes, we will tell you what could be a successful treatment for periorificial dermatitis: orally - doxycycline or minocycline (50-100mg bid); locally: metronidazole (to be applied bid); and use of topical corticosteroids should be immediately discontinued.
Nasal vestibulitis itself is often treated only locally with antibiotic mupirocin or bacitracin applied on gently cleaned (warm water and soap) and dried affected area. It is recommended to completely avoid nose picking, excessive cleaning or rubbing of the nostril with a handkerchief or facial tissue, or vigorous blowing of the nose, or manipulation/squeezing of nasal lesions. However, systemic antibiotics are sometimes indicated (such as dicloxacillin, or rifampin for recurrent infections). If a furuncle exists, it should be incised and drained.
Wishing You Optimal Health,
Dr. Jasmina Jankicevic