• J D Rollnik, O Tanneberger, M Schubert, U Schneider, and R Dengler.
• Department of Neurology and Clinical Neurophysiology, Medical School of Hannover, Germany.
• Headache. 2000 Apr 1;40(4):300-5.

ObjectiveTo determine whether injections of botulinum toxin could be of therapeutic value in the treatment of tension-type headache.BackgroundBotulinum toxin A is very effective at reducing muscle tenderness and pain in many diseases. Increased muscle tension may contribute to tension-type headache.MethodsWe performed a double-blind, placebo-controlled study with 21 patients fulfilling the International Headache Society criteria for tension-type headache. Participants were randomly assigned to treatment (pericranial injection of 10 x 20 mouse units botulinum toxin A) or placebo (injection of isotonic saline in the same manner).ResultsAfter 4, 8, and 12 weeks, no significant differences between placebo and treatment could be observed (with respect to visual analog scale, frequency and duration of headache attacks, consumption of analgesics, pressure pain threshold, total tenderness score, and quality-of-life parameters).ConclusionsThe findings of our study strongly support the hypothesis that peripheral mechanisms, such as increased muscle tenderness, only play a minor role in the pathogenesis of tension-type headache.

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