1.Henry, GL. Headache. In: Marx, JA, editor. Rosen’s emergency medicine: concepts and clinical practice. 5th ed. St. Louis: Mosby, Inc.; 2002. p. 149–53.
2.McCaig, LF. National Hospital Ambulatory Medical Care Survey: 1998 emergency department summary. No 313, May 2000. Hyattsville (MD): National Center for Health Statistics. Available: hhtp://www.cdc.gov/nchs/data/ad/ad313.pdf (accessed 2006 Oct 6).
3.Olesen, J. Classification and diagnostic criteria for headache disorders, cranial neuralgias and facial pain. Cephalalgia 1988;8 (suppl 7):196.
4.Saper, JR. Chronic headache syndromes. Neurol Clin 1989;7:387–411.
5.Fogarty, JP. Headache. In: Sloane, PD. Essential of family medicine. 3rd ed. Baltimore: Williams and Wilkins; 1998. p. 447–53.
6.Marcus, DA. Migraine and tension-type headaches: the questionable validity of current classification systems [review]. Clin J Pain 1992;8(1):28–36; discussion 37–8.
7.Jones, J. Intravenous prochlorperazine for acute headache [letter]. JAMA 1989;262:502.
8.Thomas, SH. Emergency department treatment of migraine, tension, and mixed-type headache. JEM 1994;12:657–64.
9.Ducharme, J, Beveridge, RC, Lee, JS, et al. Emergency management of migraine: Is the headache really over? Acad Emerg Med 1998;5:899–905.
10.Neighbor, ML. Sumatriptan: a new treatment for migraine. West J Med 1993;159:597–8.
11.Bateman, DN. Sumatriptan. Lancet 1993;341:221–3.
12.Dahlof, C, Ekbom, K, Persson, L. Clinical experiences from Sweden on the use of subcutaneously administered sumatriptan in migraine and cluster Headache. Arch Neurol 1994;51:1256–61.
13.Cameron, JD, Lane, PL, Speechley, M. Intravenous chlorpro-mazine vs. intravenous metoclopramide in acute migraine headache. Acad Emerg Med 1995;2:597–602.
14.Larkin, GL, Prescott, JE. A randomized, double-blind, comparative study of the efficacy of ketorolac versus meperidine in the treatment of severe migraine. Ann Emerg Med 1992;21:919–24.
15.Innes, GD, Macphail, I, Dillon, EC, et al. Dexamethasone prevents relapse after emergency department treatment of acute migraine: a randomized clinical trial. Can J Emerg Med 1999;1(1):26–33.
16.Jones, JS, Brown, MD, Bermingham, M, et al. Efficacy of par-enteral dexamethasone to prevent relapse after emergency department treatment of acute migraine. Acad Emerg Med 2003;10:542.
17.Moskovitz, MA. Neurogenic inflammation in the pathophysiol-ogy and treatment of migraine. Neurology 1993;43(suppl 3):S16-20.
18.Buzzi, MG, Moskowitz, MA. Evidence for 5-HT1B/1D receptors mediating the antimigraine effect of sumatriptan and dihydroer-gotamine. Cephalalgia 1991;11:165–8.
19.Lance, JW. Current concepts of migraine pathogenesis. Neurology 1993;43(suppl 3):S11-5.
20.Goadsby, PJ, Gundlach, AL. Localization of 3H-dihydroergota-mine-binding sites in the cat central nervous system: relevance to migraine. Ann Neurol 1991;29:91–4.
21.Hardman, JG, et al, editors. Goodman & Gilman’s The pharmacological basis of therapeutics. New York: McGraw-Hill; 1996.
22.Gallagher, RM. Emergency treatment of intractable migraine. Headache 1986;26:74–5.
23.Klapper, J, et al. The emergency treatment of acute migraine headache: a comparison of intravenous dihydroergotamine, dex-amethasone, and placebo. Cephalalgia 1991;11:159–60.
24.Saadah, HA. Abortive migraine therapy in the office with dex-amethasone and prochlorperazine. Headache 1994;34:366–70.
25.Friedman, BW, principal investigator. Headache in the emergency department (ED) — A multi-center research network to optimize the ED treatment of migraines [Internet]. July 2005. Available: http://www.clinicaltrials.gov/ct/show/NCT00122278 (accessed 2006 Oct 6).
26.Bell, R, Montoya, D, Shuaib, A, et al. A comparative trial of three agents in the treatment of acute migraine headache. Ann Emerg Med 1990;19:1079–82.
27.Stiell, IG, Dufour, DG, Moher, D, et al. Methotrimeprazine versus meperidine and dimenhydrinate in the treatment of severe migraine: a randomized, controlled trial. Ann Emerg Med 1991;20:1201–5.
28.Larkin, GL, Prescott, JE. A randomized, double-blind, comparative study of the efficacy of ketorolac versus meperidine in the treatment of severe migraine. Ann Emerg Med 1992;21:919–24.
29.Fusco, M, D’Andrea, G, Micciche, F, et al. Neurogenic inflammation in primary headaches. Neurol Sci 2003;24(suppl 2):S61-4.
30.Peroutka, SJ. Neurogenic inflammation and migraine: implications for the therapeutics. Mol Interv 2005;5:304–11.
32.Thomas, MC, Costello, SA. Disseminated strongyloidiasis arising from a single dose of dexamethasone before stereotactic radiosurgery. Case report. Int J Clin Pract 1998;52:520–1.
33.Peto, R, Pike, MC, Armitage, P, et al. Design and analysis of randomized clinical trials requiring prolonged observation of each patient I. Introduction and design. Br J Cancer 1976;34:585–612.
34.Hulot, JS, Cucherat, M, Charlesworth, A, et al. Planning and monitoring of placebo-controlled survival trials: comparison of the triangular test with usual interim analyses methods. Br J Clin Pharmacol 2003;55:299–306.
35.Rittichier, KK, Ledwith, CA. Outpatient treatment of moderate croup with dexamethasone: Intramuscular versus oral dosing. Pediatrics 2000;106:1344–8.