my 6 yr old boy cries in middle of night, tries to run , couldn't control, what to do

A. Either the child is suffering with severe stomach pain or there could be an issue of nightmares because both the things are very common to be seen with kids to wake up in the middle of the night and cry at night would rather be more common than stomach pain as well so kindly talk to the child understand what kind of problem is your child facing currently