Like'd the post thus far.
I saw someone with similar issues... He was refered to me by the police. they had told him we could give him medicine which would be undetectable to humans but would make him invisible to the 'animals' attacking him.
It worked, he takes his meds and the animals leave him alone, also works for voices no one else can hear, space aliens, ghosts...
yet to cure mother in-laws or ex wives