Annals of Indian Academy of Neurology
  Users Online: 2357 Home | About the Journal | InstructionsCurrent Issue | Back IssuesLogin      Print this page Email this page  Small font size Default font size Increase font size
Year : 2018  |  Volume : 21  |  Issue : 2  |  Page : 164-165

Procerus sign: Mechanism, clinical usefulness, and controversies

Department of Neurology, Royal Cornwall Hospital NHS Trust, United Kingdom

Correspondence Address:
Dr. Shakya Bhattacharjee
Royal Cornwall Hospital NHS Trust, Truro, Cornwall
United Kingdom
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aian.AIAN_408_17

Rights and Permissions

This sign is observed in atypical parkinsonism mainly in Progressive Supranuclear Palsy. The exact mechanism of this sign is not clear but the contraction of the Corrugator Supercilii muscle is the most important factor for the generation of vertical forehead creases. Though the wrinkling of forehead is a complex phenomenon involving multiple muscles but the 'Corrugator sign' would be a better term to describe this phenomenon. Despite the controversies regarding the mechanism and nomenclature, the 'Procerus sign' remains an important clinical clue for early Progressive Supranuclear palsy.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded115    
    Comments [Add]    

Recommend this journal