1Lipton RB,Bigal ME,Steiner TJ,et al.Classifi cation of primary headaches[J].Neurology,2004,63 (3):427-435.
2Nakashima K,Tumura R,Wang Y,et al.Effects of tizanidine administration on exterocep tive sup pression of the temporalis muscle in patients with chronic tension type headache[J].Headache,1994,34 (8):455-457.
3R.Jensen,BK.Rasmussen,B.Pedersen,et al.Muscle tenderness and pressure pain thresholds in headache:a population study[J].Pain,1993,52:193-199.
4JR.Olesen.Initiating mechanisms of experimen tally induced tension-type headache[J].Cephalalgia,1996,16:175-182.
5M.Ashina,LH.Lassen,L.Bendtsen,et al.Inhibition of nitric oxide synthase has an analgesic effect in chronic pain[J].Ugeskr Laeger,2000,162 (2):171-173.
6AC.Lyngberg,BK.Rasmussen,et al.Prognosis of mi graine and tension-type headache A population-based follow-up study[J].Neurology,2005,65:580-585.
