Uncontrollable movement is a term used to describe involuntary physical movements that cannot be consciously controlled. The two most common examples of this are TIC and SPASM. TIC is a sudden, repetitive movement or sound that is usually brief and can occur in any part of the body. SPASM is an involuntary contraction of a muscle or group of muscles. Both TIC and SPASM are uncontrollable movements that can cause discomfort or distress.