My 5 year old was asking to be hurt last night

In a robotic style she kept saying "punch me. scratch me. smash me. drag me." etc. She then balled up her hands, started hitting her head, and said, "this darn brain makes me say these things."​I'm kind of freaking out. Has anyone encountered something like this before? Do I need to contact a child mental health expert? via /r/Parenting https://ift.tt/2xsE9c7