Acne rosacea is a skin problem that affects the nose and face. It causes redness and lumps.
Blood vessels become more visible.
Sometimes the nose gets larger and looks misshapen. The cause of acne rosacea is not well understood. It may be caused by a blood vessel problem. Contrary to popular belief, there is no evidence that it results from alcoholism. Rosacea is not related to the pimples and cysts of acne.