Thanks ladies. ..and actually I did read through the chicken chick links weeks ago. I still see no lice, and my hens are fine. His comb is fine as well, and no weight loss. Thankfully, he made it thru the night and even crowed this morning! Still trying to figure out which meds to give him, and why he was so lethargic yesterday. He barely moved all day long, and wouldn't even go in with the girls at dusk, ..just lay there in the grass until I went out to get him. A friend thinks he should be treated for cocci, yet he has no bad diarrhea, and no blood in it. I'm also told that worms would cause a pale comb, but does it ALWAYS? I just don't know which to treat him for. I'm going to repost this elsewhere, list his symptoms, and hope someone can help without pics of this skin issue on his rear. I can't even find an online pic that looks similar. ..and as I said, I'm not sure that these two issues are even related. Anyway, thanks again for your help. I'm just so happy he's still alive! He's not back to normal, but so far, he seems much better than he was yesterday.
I would go ahead and treat him with corid. Not all strains of cocci will present with blood in the poop. Some buttermilk will help relieve the symptoms and buy you some time while you get the meds.