My sister took in a ferrel cat and shortly after he came home he started having siezures. He went to the vet and they ruled out all other causes, so it appears to be epilepsy. She can't afford the meds for him and can't find a shelter who will take a sick cat. He seems happy most of the time, except for the siezures. Is he suffering? or is not giving him meds going to make him sicker and die?