Source: Occult Bestiary, pg(s). 59
Psychic vampires are a breed of vampire who hunger for the occult energy that fuels psychic magic. They are also called vetalaranas by scholars who compare them to vetala vampires who consume a more refined form of spiritual energy.
A psychic vampire forms when a creature capable of psychic magic dies in a state of denial. It tries to cling to the Material Plane by drawing on the occult energy of itself and nearby creatures in vain; however, if its willpower is strong enough, it arises as a psychic vampire that now sustains its existence by draining others' mental energy. Psychic vampires cannot create spawn, so their number is small.
Psychic vampires are not affected by religious mantras and superstitions, though most psychic vampires that were religious in life are not aware of this and often react with fear toward these mantras until they realise that they are harmless. Psychic vampires have difficulty tolerating and approaching an opponent who is openly defiant and fearless toward it.