Morbihan disease

Introduction
Morbihan disease is a condition of unclear aetiology characterised by solid facial swelling, usually in the upper and middle parts of the face. The disease may develop as a complication of rosacea, with intense erythema and telangiectasias. It mainly affects middle-aged men. Objective. To present a case of a patient with rare Morbihan disease, who was treated with isotretinoin and ketotifen.

Case report
A 45-year-old patient came to the Department of Dermatology due to an erythematous facial swelling lasting about one year. Laboratory tests showed elevated liver parameters with no other abnormalities. Because of a significant exacerbation of skin lesions, treatment with isotretinoin and ketotifen was initiated. Improvement was observed after 11 months of treatment.

Conclusions
Differential diagnosis of Morbihan disease should take into consideration oedema in the course of systemic diseases and other causes of localised lymphoedema. Histopathological examination is recommended for diagnosis.