Cats who are hard of hearing or deaf often howl. This may aso be indicative
of hyperthyroidism.
Gail

**Kailey,

Please note that I'm not a vet, but I do have some suggestions. Her hearing
issue could play into her confusion, certainly. But if your cat has had
recent blood work, seems in good health, no arthritis, no stomach/
intestinal problems, no pain that you know of, then my bet is that her
"howling" is most probably related to being elderly and becoming confused
and/or disoriented when she awakens at night.

Elderly animals, like humans, sleep cycles become more easily disturbed as
they age. This seems to be related to the natural aging process. Although,
you really might want to have her tested and checked out for arthritis and/
or any joint pain she may be experiencing.  Try gently* squeezing her paws
and around leg areas. If she cries out, then that would confirm she is
feeling pain in or around her joints.

It wouldn't be too surprising, IMO, if she had this/ some mild to moderate
arthritis. This would/ could be causing her pain and could act up at night
also/ hence causing her loud cries.

My old boy Blue didn't have arthritis, but during the last 5 years of his
life, when he had just turned 15, he began doing this late night, middle of
the night, loud "cry".  It always woke me up. It would be a loud, almost
wailing. "MeOOOwwwwing!" Like, "MOMMA, where are you!?" usually in the
middle of the night, when he wasn't with me, and had maybe gotten up to eat,
drink or go to the bathroom. Or maybe he had fallen sound asleep in the
living room and would wake up not knowing where he was, where I was.  Blue
seemed to sleep much more deeply the older he became.
He seemed to become disoriented to his surrounding at night, since it was
usually pitch black. You could try leaving on a light at night for her. Blue
would usually stop his crying when I would (loudly) call back to him, "Blue,
it's okay! I'm in the bedroom! Come here, boy!" It seemed to assured him.

Good luck to you and your kitty.

ML

Wow! I am having the very same issue with my 23 year old kitty! Has been seen
by two vets who  have found nothing remarkable. I am exhausted! Have tried
coming home in time to use up a bit of her energy, but not much help. The
screaming sounds as if she's tortured, but like your Missy doesn't seem
inpain and purs........just needs way too much attention. The best I've found
is a teenie tiny tranquilizer, for her late at night, That way we can get
about 5 hours............also using a spray pheramone to try to calm her down.
.............Best bet seems to be a bit of the tranquilizer. She wakes up no
worse for wear and I have atleast had a few hours of rest..............Good
luck to both of us.
We are lucky to have healthy senior kitties!! Mine is howling as I type!!!