Occasionally, I get really sullen, and its like my mind can not concentrate. I have to escape through television or food or something. Its like something is agitated inside..and the only way for it to subside is for me to cut or eat or act out in some way. I'm not sure if I have explained this well? What is this? What does it mean? Is it a mania? Is it a nervousness? Should I be on meds specifically for this?