Hi, a good friend of mine has had a rash on his body for the last five years. He has been to see doctors but they are unable to diagnose what it is. It is gradually spreading further up his body. At the moment it cover his legs, arms, hands, feet, right up to his chest covering these parts of his body entirely. It becomes more noticeable when he drinks alcohol so maybe it has something to do with his liver? Can you provide me with an idea of what this could be please?