Tic - facial; Mimic spasm
Causes, incidence, and risk factors
Tics most often occur in children, but may last into adulthood in some cases. Tics occur three to four times as often in boys as girls. Tics may affect as many as one-fourth of all children at some time.
The cause of tics is unknown, but stress appears to make tics more severe.
Short-lived tics (
Certain medications, such as methylphenidate (used to treat hyperactivity in children), were previously thought to cause tics in children already prone to the disorder. However, recent studies do not support this idea, and suggest that these medications can be used in children with tics who also have
Review Date: 03/09/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.