Differential effectiveness of electromyograph feedback, verbal relaxation instructions, and medication placebo with tension headaches.
D000293:Adolescent; D000328:Adult; D004576:Electromyography; D005246:Feedback; D005260:Female; D006261:Headache / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010919:Placebos; D012064:Relaxation Therapy
D010919:Placebos