The psychic vampire will never give freely. They will only give emotionally or materially if they can get something that they value in return: power over another person; money; goods; or praise.
The psychic vampire will always see themselves as the victim, no matter what atrocity they have committed.
The psychic vampire is endlessly self-pitying and craves the sympathy of others, while frequently asserting that they never complain.
The psychic vampire rarely, if ever, says "thank you" to anybody.
The psychic vampire rarely creates something original or unique, preferring to steal ideas from others and claim them as their own.
The psychic vampire is stingy or mean emotionally and financially. Do not look for emotional support or financial support from the psychic vampire. Their words of sympathy are begrudgingly given and hollow, and they always feel that they are worse off than you. They will often ignore any complaints that you have and tell you how much worse it is for them: even if they're rich and you're poor; they're healthy and you're not; they have one child and you have three. Any money that they offer to lend or give will always be with the insistence and expectation that you will give back more and more; either financially or emotionally.
The psychic vampire has no real regard for you as a person. They will do their best to insinuate themselves into your life and once there, they will accord you no courtesy as a person in your own right. They are extremely possessive and regard you as their belonging.
The psychic vampire will expect you to be there for them when they need you but they will rarely help you if you need help. They will always put themselves and their wants first, no matter how inconvenient it is for you.
The psychic vampire is a liar, who cunningly mixes truth with fact to gain your pity.
The psychic vampire often claims that you are their best friend, but their "friendship" is based on them taking and you giving; whether it's time, knowledge, emotional support or money.
The psychic vampire is usually well off financially because they are mostly mean, and yet they claim to be poor. I believe that they honestly feel poor because of the gaping void in their personalities. Also, the claim of poverty garners sympathy as well as being useful to them by stopping people who are valueless to them for asking for loans.
The psychic vampire will borrow possessions of yours and not return them. The more value that a possession has to you, the more they want it and the less likely they are to keep it. They will often ask for something, get it, and then throw it out. The value seems to lie in the getting of the possession and the power that they have to make you feel like giving the possession to them, rather than in the item.
The psychic vampire takes a long time to make decisions, to finish jobs or to do a household task that would take anybody else in good health a short amount of time.
The psychic vampire always makes you feel drained and exhausted, especially after they have visited you.
The psychic vampire is completely self-absorbed. They will commit the most extraordinary trespasses on your life and feel totally entitled to.
The psychic vampire feels no shame or guilt over the way they treat others. They do not seem to possess a conscience.
The psychic vampire will ask you if there is anything that you want, and when you finally think of something - because they are so insistent - they will get something else instead that you do not want, but that they like, and then expect your gratitude. They will cry in an attempt to make you feel guilty if you tell them that you didn't want it.
The psychic vampire can sulk for days on end.
The psychic vampire will make you seem less than you are to other people. They have an extremely subtle way of denigrating you.
The psychic vampire will go to extraordinary lengths to try to make you stop doing something that they don't approve of eg smoking or not putting your window shades down in summer.
The psychic vampire is extremely emotionally manipulative.
On an instinctive level: you often get a very creepy feeling around a psychic vampire. Something about them is wrong, but it is so subtle that it is hard for you to trust this true instinct, so you often ignore it.
The psychic vampire is extremely demanding. They can overtly order you to do something that they want you to do, but they usually prefer to manipulate you emotionally.
The psychic vampire has few friends, as many people dislike them instinctively and have a strong aversion to them.
Note - The more that I describe these people, the more I think that it sounds like a sociopath that I'm writing about. I've never personally known a psychic vampire who has committed a murder, but I believe that they could murder somebody with no remorse except for themselves for either losing that person or for getting caught when it "wasn't their fault".
Note 2 - About the "creepy" feeling: it's hard to describe, but it's a feeling that somehow that person isn't wholesome in some way; that they're yukky or icky; as if they're never really clean or they're soiled in their personality or inside themselves. I think that it's a feeling of uncleanliness, wrongness and moral sin. I know that some people sense this immediately and dislike the psychic vampire at first meeting. The psychic vampire doesn't usually have many friends because of this, and they learn early to latch on to anybody who is at all nice to them.