why are most alcoholics’ noses red? is it blood pressure or something?
Alcohol causes dialation of capillaries in the skin. With chornic alcoholics, the effect will sometimes be semi-permanent.
Colloquially these are known as gin blossoms. A popular band adopted the term after seeing a picture of W.C. Fields.
IIRC, people who are light-skinned and tend toward rosacea can have this condition exacerbated by drinking, both short-term and in the long run.
This sometimes happens to the entire face, right? Someone please confirm or tell me I’m wrong. 
Yes kniz if you will follow the link I provided it will give you all the specifics.
Rosacea is actually a disorder of the blood vessels in the face. They are prone to overreactive dilation. Over time, the walls of the vessels get weak and stay dilated. An ugly side effect of this is the migration of blood components into the skin, which irritates and causes bumps and pustules. Rosacea sufferers have “permanent” red patches on their faces.