Riddle has been solved. Chronic lyme. Ugggghh I HATE lyme. Explains a lot, though. I've posted about Henry a few times as being a bit "off". I had the most severe case of chronic lyme I had ever seen with my mare who passed a way a few months ago. I am hopeful that given Henry's young age he won't have too much of an issue with it. Going to treat with minocycline as I think it's more effective than doxy and I'm going to start him on double doses of MSM and add magnesium to his grain.