MY DOGS JAW ON THE LEFT SIDE STARTED HANGING DOWN AND SHE HELD HER HEAD DOWN ON THAT SIDE TOWARD THE GROUND AND SHE WOULD DROOL REAL BAD. I THOUGHT SHE WAS STUNG IN THE MOUTH BY A BEE. WHEN I TOOK HER TO THE VET SHE PUT HER ON TWO DAYS OF BENADRYL. THE DROOLING HAS STOPPED BUT HER MOUTH STILL HANGS DOWN AND SHE ACTS LIKE SHE DOES NOT HAVE HER BALANCE AT TIMES WHEN SHE TRIES TO GET UP. THE VET HAD TO EXASPERATE A GLAND IN THE RECTUM AT THE SAME TIME BECAUSE SHE WAS CONSTIPATED.COULD SHE HAVE HAD A MILD STROKE ON THAT SIDE?
This sounds more like vestibular disease or horners syndrome. Ask your vet about it. A stroke would be very rare but possible. vetcare