How can you tell if someone has rosacea?

Look at facial skin: Rosacea typically causes a reddish vascular discoloration of the affected tissues, usually in a "butterfly pattern" of the cheeks, nose, and central forehead. Certain skin bacteria can play a role in some patients, which is why topical antibiotics are often used. Severe or long-standing rosacea can cause skin thickening, cysts, and lead to rhinophyma. Rosacea is unrelated to alcohol use.

Cheeks and nose: Acne roseacea is a condition which affects northwestern european women>men, starting in their 40s. 1st stage: flushing; 2nd dilated capillaries; 3rd textural differences, including enlarged pores and thickened skin. Treatment is targeted to delaying the progression of the stages but is mostly palliative instead of curative. Tough condition but not life threatening.