Vampirismus (1982)

A Count marries a woman with illness that makes her suffer attacks of vampirism. The Count took flight in the wildest horror, and ran, without any idea where he was going or what he was doing, impelled by the deadliest terror, all about the walks in the park, till he found himself at the door of his own Castle as the day was breaking, bathed in cold perspiration. Involuntarily, without the capability of taking hold of a thought, he dashed up the steps, and went bursting through the passages and into his own bedroom.

Unfortunately the movie Vampirismus is not yet available on HBO Max.