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Keywords:

  • Chronic tension-type headache;
  • scalp and neck muscle relaxation;
  • surface electromyography

SYNOPSIS

Fourteen patients with the continuous form of chronic tension-type headache maintained electromyographically documented relaxation of frontalis and trapezius muscles for two consecutive hours. The headache intensity of the group did not decrease from the beginning to the end of the recording session. This result is evidence against tonic muscle tension as the mechanism of this form of headache.