The clinical term for drinking blood is "Hematophagy."
But, I don't think there really is a sickness that you HAVE to drink blood, but there are some. Like, psychiatric cases of patients performing hematophagy also exist.
Also, sucking one's own blood from a wound is also a behavior commonly seen
in humans, and in small enough quantities is not considered taboo.
Porphyria
That sickness is called haemmaloid.
Vampirism.
horses shouldn't eat or drink after exersising. this could cause a fatal stomach sickness called Colic.
erm i do believe a vampire that doesnt drink blood is simply called a hungry vampire. A psy vamp or a psychic vampire draws from others energy and don't necessarily drink blood
to drink blood! to drink blood!
the answer is drink alcoholic bevereges to cure this sickness...
They bite animals and drink their blood, this is why they are called vampire bats.
My mom had a sickness that was called pneumonia
Sickness and barcode !!! Sickness is the one you are thinking of!!
Sharks are not mammals, and they do not drink blood.
Sickness.