Treatment of Tourette syndrome using gaboxadol or a pharmaceutically acceptable salt thereof is provided. Treatment of tics using gaboxadol or a pharmaceutically acceptable salt thereof is provided. Treatment of stuttering using gaboxadol or a pharmaceutically acceptable salt thereof is provided. Therapeutic compositions that may be used to improve one or more symptoms of Tourette syndrome are provided. Therapeutic compositions that may be used to improve one or more symptoms of tics are provided. Also provided are therapeutic compositions that may be used to improve one or more symptoms of stuttering.