Longtime bay area blues/rock guitarist Damon Fowler has never been one to rest on his laurels. These days, in fact, he’s trying not to do much sitting at all. Fowler, 47, is dealing with serious medical issues that are keeping him out of the clubs and off the road indefinitely. “It’s a crazy thing to talk about,” he says. “It’s kind of humbling. I’m not embarrassed to talk about it…