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Chronic Tension Headache 

Blumenfeld, Andrew M. Impact of Botulinum Toxin Type-A Treatment on Medication Costs and Usage in Difficult-to-Treat Chronic Headache: Case Studies. Headache Q 2001; 12:241 –244) 

Freund BJ, Schwartz M. The use of botulinum toxin-A in the treatment of refractory cluster headache: case reports. Cephalalgia 2000;20(4): 329-330. 

Freund BJ, Schwartz M. A focal dystonia model for subsets of chronic tension headache. Cephalalgia 2000 May;20(4):433. 

Freund BJ, Schwartz M. Treatment of chronic cervical-associated headache with botulinum toxin A: A pilot study. Headache 2000;40:231-6.  

Freund BJ, Schwartz M. Treatment of whiplash associated with neck pain with botulinum toxin-A: A pilot study. J of Rheumatology 2000;27(2): 481-484. 

Gobel H et al. Treatment of chronic tension-type headache with botulinum toxin. Cephalalgia 1999;19:455 (Poster VI-G5-8). 

Klapper JA, Mathew NT, Klapper A, Kailasam J. Botulinum toxin type A (BTX-A) for the prophylaxis of chronic daily headache. Cephalalgia 2000;20(4):292-293.  

Mauskop A. Botulinum toxin in the treatment of chronic daily headaches. Cephalalgia 1999: 19:453 (Poster VI-G5-3). 

Porta M. A Comparative trial of botulinum toxin type A and methylprednisolone for the treatment of tension-type headache. Curr Rev in 2000;4(1):31-5. 

Relja MA. Treatment of  tension-type headache with botulinum toxin: 1-year follow-up. Cephalalgia 2000;20(4):336.  

Relja MA, Korsic M. Treatment of tension-type headache by injections of botulinum toxin type A: double-blind placebo-controlled study. Neurology 1999;52(Suppl 2): A203 (Abs P03.035) 

Relja M.  Treatment of Tension-Type Headache by Local Injection of Botulinum Toxin.  Eur J Neurol 1997;4(Suppl 2):S71-73. 

Schmitt et al. Effect of botulinum toxin A injections in the treatment of chronic tension-type headache: a double-blind, placebo-controlled trial. Headache 2001;41(7):658-664. 

Smuts JA, Barnard PWA. Botulinum toxin type A in the treatment of headache syndromes: a clinical report on 79 patients. Cephalalgia 2000;20(4):332. 

Smuts et al. Prophylactic treatment of chronic tension-type headache using botulinum toxin
type A. Eur J of Neurology 1999;6(Suppl 4):S99-S102.

Troost, BT: Botulinum Toxin Type A (BOTOX®) for Intractable Headache.  AHS Annual Meeting, Seattle, June 22, 2002, Poster S137 (On-Line) (large .pdf file )