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Dermatology GPSI Dr Clare Kendall gives key tips on the diagnosis and management of this troublesome skin condition
1. Rosacea is not related to acne
Although sometimes misleadingly referred to as `acne rosacea', this is quite a different disease from `acne vulgaris', which is more commonly found in teenagers. Unlike acne, it is not centred on the pilosebaceous unit, there is no increase in sebum and there are no comedones. Its precise aetiology is unknown but is likely to involve an abnormality of small blood vessels and dermal architecture, leading to a cycle of inflammation and further damage. The role of Helicobacter pylori and the demodox mite is uncertain.
Although rosacea is more common in middle life it can occur at any age, and is particularly found in women and fair-skinned individuals. Prevalence is thought to be about 10 per cent.
Unlike acne, which affects sebaceous hair-bearing areas, rosacea is found predominantly on the convex areas of the central face - the nose, forehead and cheeks. Occasionally it affects other regions such as the scalp…