ICD-11 definition : The hallmark of phymatous rosacea is rhinophyma but the forehead, chin and ears may
also be affected. It is characterized by hypertrophy of the affected tissue which
can produce gross distortion, particularly of the nose. The pathological changes include
a variably severe mixed inflammatory infiltrate, sebaceous gland hyperplasia and dermal
fibrosis. The aetiology is poorly understood. It is not always accompanied by other
features of rosacea.;
The hallmark of phymatous rosacea is rhinophyma but the forehead, chin and ears may
also be affected. It is characterized by hypertrophy of the affected tissue which
can produce gross distortion, particularly of the nose. The pathological changes include
a variably severe mixed inflammatory infiltrate, sebaceous gland hyperplasia and dermal
fibrosis. The aetiology is poorly understood. It is not always accompanied by other
features of rosacea.