No, maybe allergies or a cold the Antibiotics will work for 2 weeks. It just seems like something is always wrong with him, Flees, missing hair, rashes, cuts, watery eyes I don't get it!
Sounds like allergies to me.As for fleas they can be bit just once & go into a frenzy of pulling their hair out.Are you treating the fleas with something that works? Cats can have allergies like people.Very common. Hugs C.