Haematodipsia- A sexual thirst for blood.
Hedonism- Excessive devotion to pleasure.
Hemat(o)- [Greek] Prefix meaning blood; see also words beginning with hem, hemo, or haemat(o).
Hematemesis- The vomiting of blood.
Hematidrosis- Excretion of bloody sweat. (I have seen this happen to a vampire in at least one novel.)
Hematophageous- Subsisting on blood.
Hematoporphyria- (see porphyria).
Hematospermia- Blood in the semen; hemospermia. (Again, I have seen this as a vampire characteristic in a novel.)
Hemeralopia- Day blindness; defective vision in a bright light.
Hemogeneic- Pertaining to production of blood.
Hemotherapy- The use of blood in treating disease.
Lust murder- The sexual act after the murder.1
Necro- [Greek] Prefix meaning death.
Necrocytosis- Death and decay of cells. (I.e. the medical term for "rotting.")
Necrogenous- Originating or arising from dead matter.
Necrolysis- Separation or exfoliation of necrotic tissue. (This has more application in the accounts of