Need help. My father is a 70 yr old that has Hep C under control for many years. He also has a recurring painful leg rash (very itchy) that extends from ankles up to upper thighs. Onset is unpredictable but starts off by feeling a burning sensation. Looks like red circles...usually lasts for about 3 to 5 days then goes away for about a month, then recurs. He has had blood tests to rule out allergies...many docs don't know where to go from here. Any suggestions?