Hi everyone. My Syrian hamster (Gus) has developed bald patches in his fur. I'm concerned for his welfare and want some advice. These bald patches are over his head, back, side and underbelly, there are 4 large patches in total. He is a 2 year 2 month old (roughly) Syrian who has been happy and healthy throughout his life. About 4 months ago we had a flea outbreak in our house (new kitten) and unfortunately he had been using his playpen whilst we were unaware of the outbreak. He got fleas. We treated him with two vet provided treatments and one PAH topical treatment (and monitored very closely to ensure no reaction). We are very nearly eradicated of fleas (after two intensive flea treatments we have found the occasional dead flea in our living room, but Gus stays in our spare bedroom where the cats are not allowed for obvious reasons). Our vets overall have not been very interested, they are great with our cats, but don't seem to have much small pet experience. His fur is generally thin and has been increasingly thinning over the past few months and he has become thinner. These bald patches have developed over the past few weeks. I have noticed him scratching at his skin, but the underlying skin is not red, irritated or dry. My question is, is this likely old age? Or is this something worth getting seen to by the vets? At his age I don't want to put him through any excessive stress, but I don't want him to be in any pain. Any advice would be greatly appreciated.