Hi My pup is scratching a lot in the morning after waking up, but not the rest of the day.. I've been using kiskin regularly and also givng him a syrup that doctor prescribed. But there's still no use. I went to two doctors and they couldn't figure out the reason why he scratchs. He doesn't have fleas/ticks. His pee/poop is normal, and he's quite active too. Please give me some tips to manage this issue.