I would the Vet for some meds to calm it down, then try to modify the cat's behavior problem.

Maybe having another cat around might help.

It is so hard to tell what goes on in their furry little minds.

Gabe, my latest adoption, seems to have calmed down quite a bit with a change of home, medications before the change, and the additional cat mates. I think I just lucked out!

Keep us posted.

Good luck.