People with AHC have movement problems including involuntary movement of limbs and body. Typically, a dance-like movement with hands clenched parallel to chest is seen while walking. Some are unable to walk or have involuntary movements while walking. They also exhibit exaggerated reflexes when excited. Since muscle is less toned and motor control is affected, there are difficulties in chewing and swallowing food. Difficulty in controlling bowels during the early years can also occur, affecting toilet training.