What is the medical term for someone who pokes themselves with pointed objects? For example, gently poking your thumb with a pencil because it gives you a soothing sensation?

Could this behavior be a sign of stereotypy in partial seizures rather then a psychological compulsion?

I ask because I do this, for example, I'll instinctively fold up a piece of paper and then proceed to prick myself in the fingers and fidget with it. This behavior is usually accompanied by compulsive rhythmic foot moment; it's usually an unconscious behavior, often I'm not even aware that I'm doing it. Both of them provide a soothing sensation that relieves anxiety. Dyscognitive features usually also accompany these compulsive behaviors.

My psychiatrist recently started me on Keppra (an anticonvulsant) and that seems to help curb the behavior and dyscognition. I have a long history of high prolactin levels in my lab work and I recently learned that high prolactin is associated with seizures. I'm trying to research and ascertain if I should go see a neurologist for a possible seizure disorder.