Nervous spasms, also known as TICS, are involuntary muscle contractions that can cause sudden and repetitive movements or sounds. They are usually caused by a combination of genetic and environmental factors, and can range from mild to severe in intensity. TICS are a common symptom of Tourette Syndrome, a neurological disorder characterized by multiple physical and vocal TICS. Treatment for TICS can include medications, behavioral therapy, and lifestyle changes.