Originally Posted by xxjackyxx

hairless rats are prone to more health problems than furry ones, mostly because no one that knows what they are doing properly is breeding them so most come from back street breeders with little knowledge.

What did the vet say the problem was?

If he hasnt been to the vets yet i would recommend you take him, rats are very good at hiding the fact that they are ill and go down hill very fast, also with him being hairless he wont appear 'fluffed' as furry ones do when they feel ill.