I am already medicated and am about to increase it so I'm not looking for advice on that front. 

I'm on tranquilizers and antipsychotics. 

Last night it just hit me and i, an almost 25 year old woman, had to call for my mom to come sit with me while i compulsively hit myself in the head, on knees, on ankles and collarbones. Idk what to do to get out of the panic in trapped in. 

Anyone have some huge ways to help you stop dissociating or stop a snowball into a psychotic episode?

Itried drawing. It didn't really help, i kept hitting myself while trying to draw... I can't play my kalimba for fear that i might break it somehow in that state. Tried talking it out with my mom, tried journaling, tried watching videos, tried music... Nothing besides bruising my entire body had helped physically snap me out of hysteria for a brief moment. 

Maybe i can try a milder form of physical intervention instead of hurting myself. Rubber band on my wrist maybe? What are your suggestions?