Tension headache in emergency department patients.
D000293:Adolescent; D000328:Adult; D001007:Anxiety / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003863:Depression / Q000150:complications; D004636:Emergency Service, Hospital; D005260:Female; D006261:Headache / Q000209:etiology*; D006745:Hospital Bed Capacity, 300 to 499; D006801:Humans; D007223:Infant; D008297:Male; D010414:Pennsylvania; D011570:Psychiatry; D012189:Retrospective Studies