repetitive tic

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Introduction

Brief, repetitive, stereotyped, coordinated movements occurring at irregular intervals. They appear to be purposeless.

Etiology

Pathology

  • they are done voluntarily, but cannot be completely controlled
  • the urge to perform the movements can be suppressed for short periods of time, but is irresistable

Clinical manifestations

  • repetitive wrinking, grimacing or shoulder shrugging
  • the face is most frequently involved, but any part of the body may be involved
  • one form of tic may be present or a combination of tics may be present, carried out simultaneously, consecutively, or alternately

Differential diagnosis

More general terms

Additional terms

References

  1. Guide to Physical Examination & History Taking, 6th edition, Bates B, JB Lippincott, Philadelphia, 1995, pg 545
  2. Medical Knowledge Self Assessment Program (MKSAP) 11, American College of Physicians, Philadelphia 1998
  3. Diagnostic and Statistical Manual of Mental Disorders, 4th ed., Text Revision, DSM-IV, American Psychiatric Association, Washington DC, 1994