Q. My dog has been having a light sensitivity and losing control of his back end. Any ideas?
DAVID ELBEZE, DVM, MRCVS
A. How old is he? is he vaccinated? if not I would suspect distemper virus infection - those two symptoms together would fit this diagnosis. It's a very severe viral infection, in many cases even fatal. other causes of light sensitivity could be damage to the eye or the ocular nerve. A tumor in the brain could also potentially cause both symptoms. I would advice you to take him to the vet as soon as you can.