Behavioral & Cognitive Disorders
Jan. 09, 2022
Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
This young man with Tourette syndrome demonstrates a blocking tic during which he holds his breath. Then he has expiratory phonic tics. (Contributed by Dr. Joseph Jankovic.)