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Pharmacological Management of Treatment-Resistant Obsessive-Compulsive Disorder

  • Therapy in Practice
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Abstract

Once considered rare and resistant to treatment, obsessive-compulsive disorder (OCD) has now emerged as a common, yet often unrecognized, psychiatric condition. Treatment with selective serotonin reuptake inhibitors (SSRIs) is effective in 40–60% of patients with OCD. Management of the remaining 40–60% of patients with treatment-resistant OCD is challenging.

We review up-to-date evidence focusing on strategies for treatment-resistant OCD, including increasing the dose of SSRI, switching to another SSRI, augmentation with antipsychotics, and the use of serotonin nor-adrenaline (norepinephrine) reuptake inhibitors (SNRIs) and monoamine oxidase inhibitors (MAOIs). Finally, we provide a flow chart, which includes nonpharmacological interventions such as cognitive-behavioural therapy, family interventions and physical interventions such as neurosurgery and deep brain stimulation, alongside the pharmacological strategies.

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References

  1. American Psychiatric Association. Diagnostic and statistical manual of mental disorders. 4th ed., text rev. Washington,DC: American Psychiatric Association, 2000

    Google Scholar 

  2. Goodman W, Price L, Rasmussen S, et al. The Yale Brown Obsessive Compulsive Scale: validity. Arch Gen Psychiatry 1989; 46: 1012–6

    Article  PubMed  CAS  Google Scholar 

  3. National Collaborating Centre for Mental Health, National Institute for Health and Clinical Excellence. National clinical practice guideline number 31: obsessive compulsive disorder. Core interventions in the treatment of obsessive compulsive disorder and body dysmorphic disorder. London: The British Psychological Society and The Royal College of Psychiatrists, 2006: 350

    Google Scholar 

  4. Marazziti D, Consoli G. Treatment strategies for obsessive-compulsive disorder. Expert Opin Pharmacother 2010 Feb; 11(3): 331–43

    Article  PubMed  CAS  Google Scholar 

  5. Andrews G, Cremer M, Crino R, et al. The treatment of anxiety disorders: clinician guides and patient manuals. 2nd ed. New York: Cambridge University Press, 2002

    Google Scholar 

  6. Boschen MJ, Drummond LM, Pillay A. Treatment of severe, treatment-refractory obsessive-compulsive disorder: a study of inpatient and community treatment. CNS Spectr 2008 Dec; 13(12): 1056–65

    PubMed  Google Scholar 

  7. Geller DA. Obsessive-compulsive and spectrum disorders in children and adolescents. Psychiatr Clin North Am 2006 Jun; 29(2): 353–70

    Article  PubMed  Google Scholar 

  8. Eisen JL, Mancebo MA, Pinto A, et al. Impact of obsessive compulsive disorder on quality of life. Compr Psychiatry 2006; 47: 270–5

    Article  PubMed  Google Scholar 

  9. Norberg MM, Calamari JE, Cohen RJ, et al. Quality of life in obsessive compulsive disorder: an evaluation of impairment and preliminary analysis of the ameliorating effects of treatment. Depress Anxiety 2008; 25: 248–59

    Article  PubMed  Google Scholar 

  10. Olantnji BO, Cisler JM, Toilin DF. Quality of life in the anxiety disorders: a meta-analytic review. Clin Psychol Rev 2007; 27: 572–81

    Article  Google Scholar 

  11. Riggs DS, Hiss H, Foa EB. Marital distress and the treatment of obsessive compulsive disorder. Behav Ther 1992; 23: 585–93

    Article  Google Scholar 

  12. Leon AC, Portera L, Weissman MM. The social cost of anxiety disorders. Br J Psychiatry Suppl 1995; 27: 19–22

    PubMed  Google Scholar 

  13. Allen A, Pallanti S. The family in the treatment of obsessive-compulsive disorder. In: Huddak R. Clinical-obsessive compulsive disorders in adults and children [online]. Available from URL: http://ebooks.cambridge.org/chapter.jsf?bid=CBO9780511973796&cid=CBO9780511973796A019 [Accessed 2011 May 17]

  14. Pallanti S, Hollander E, Bienstock C,; International Treatment Refractory OCD Consortium. Treatment non-response in OCD: methodological issues and operational definitions. Int J Neuropsychopharmacol 2002 Jun; 5(2): 181–91

    Article  PubMed  Google Scholar 

  15. Jenike MA. Clinical practice: obsessive-compulsive disorder. N Engl J Med 2004 Jan 15; 350(3): 259–65

    Article  PubMed  CAS  Google Scholar 

  16. Pallanti S, Hollander E, Goodman WK. A qualitative analysis of nonresponse: management of treatment-refractory obsessive-compulsive disorder. J Clin Psychiatry 2004; 65 Suppl. 14: 6–10

    Google Scholar 

  17. Foa EB, Steketee G, Milby JB. Differential effects of exposure and response prevention in obsessive-compulsive washers.J Consult Clin Psychol 1980 Feb; 48(1): 71–9

    Article  PubMed  CAS  Google Scholar 

  18. Franklin ME, Abramowitz JS, Kozak MJ, et al. Effectiveness of exposure and ritual prevention for obsessive-compulsive disorder: randomized compared with nonrandomized samples. J Consult Clin Psychol 2000 Aug; 68(4): 594–602

    Article  PubMed  CAS  Google Scholar 

  19. Foa EB, Liebowitz MR, Kozak MJ, et al. Randomized, placebo-controlled trial of exposure and ritual prevention, clomipramine, and their combination in the treatment of obsessive-compulsive disorder. Am J Psychiatry 2005 Jan; 162(1): 151–61

    Article  PubMed  Google Scholar 

  20. Frost RO, Steketee G. Cognitive approaches to obsessions and compulsions: theory, assessment and treatment. Oxford: Elsevier Science, 2002

    Google Scholar 

  21. Kozak JM, Foa EB. Mastery of obsessive compulsive disorder: a cognitive-behavioral approach. New York: Oxford University Press, 1997

    Google Scholar 

  22. Wilhelm S, Steketee G. Cognitive therapy of obsessive-compulsive disorder: a guide for professionals. Oakland (CA): Harbinger Publications, 2006

    Google Scholar 

  23. Koran LM, Hanna GL, Hollander E, et al., American Psychiatric Association. Practice guideline for the treatment of patients with obsessive-compulsive disorder. Am J Psychiatry 2007 Jul; 164(7 Suppl. ): 5–53

    PubMed  Google Scholar 

  24. Hollander E, Zohar J. Beyond refractory obsessions and anxiety states: toward remission. J Clin Psychiatry 2004; 65 Suppl. 14: 3–5

    Google Scholar 

  25. Fernandez CE, Lopez-Ibor JJ. Mono chlorimipramine in the treatment of psychiatric patients resistant to other therapies. Actas Luso Esp Neurol Psiq Ciec Afines 1967; 26: 119–47

    Google Scholar 

  26. Zohar J, Insel TR. Obsessive-compulsive disorder: psycho-biological approaches to diagnosis, treatment, and patho-physiology. Biol Psychiatry 1987 Jun; 22(6): 667–87

    Article  PubMed  CAS  Google Scholar 

  27. Zohar J, Judge R. Paroxetine versus clomipramine in the treatment of obsessive-compulsive disorder: OCD Paroxetine Study Investigators. Br J Psychiatry 1996 Oct; 169(4): 468–74

    Article  PubMed  CAS  Google Scholar 

  28. Decloedt EH, Stein DJ. Current trends in drug treatment of obsessive-compulsive disorder. Neuropsychiatr Dis Treat 2010 May 25; 6: 233–42

    Article  PubMed  CAS  Google Scholar 

  29. American Psychiatric Association. Practice guideline for the treatment of patients with obsessive-compulsive disorder [online]. Available from URL: http://www.psychiatryonline.com/pracGuide/pracGuideTopic_10.aspx [Accessed 2011 Apr 5]

  30. Zohar J. Escitalopram in the treatment of obsessive-compulsive disorder. Expert Rev Neurother 2008 Mar; 8(3): 339–49

    Article  PubMed  CAS  Google Scholar 

  31. Rabinowitz I, Baruch Y, Barak Y. High-dose escitalopram for the treatment of obsessive-compulsive disorder. Int Clin Psychopharmacol 2008 Jan; 23(1): 49–53

    Article  PubMed  Google Scholar 

  32. Ninan PT, Koran LM, Kiev A, et al. High-dose sertraline strategy for nonresponders to acute treatment for obsessive-compulsive disorder: a multicenter double-blind trial. J Clin Psychiatry 2006 Jan; 67(1): 15–22

    Article  PubMed  CAS  Google Scholar 

  33. Marazziti D, Golia F, Consoli G, et al. Effectiveness of long-term augmentation with citalopram to clomipramine in treatment-resistant OCD patients. CNS Spectr 2008 Nov; 13(11): 971–6

    PubMed  Google Scholar 

  34. Mundo E, Rouillon F, Figuera ML, et al. Fluvoxamine in obsessive-compulsive disorder: similar efficacy but superior tolerability in comparison with clomipramine. Hum Psychopharmacol 2001; 16(6): 461–8

    Article  PubMed  CAS  Google Scholar 

  35. Bisserbe J, Lane R, Flament M, the Franco-BelgianOCD Study Group. A double-blind comparison of sertraline and clomipramine in outpatients with obsessive-compulsive disorder. Eur Psychiatry 1997; 12(2): 82–93

    Article  PubMed  CAS  Google Scholar 

  36. Stahi SM. Essential psychopharmacology: neuroscientific basis and practical applications. 2nd ed. Cambridge,UK: Cambridge University Press, 2000

    Google Scholar 

  37. Stahl SM. Essential psychopharmacology: neuroscientific basis and practical applications. 2nd ed. Cambridge,UK: Cambridge University Press, 2000

    Google Scholar 

  38. Denys D, van der Wee N, van Megen HJ, et al. A double blind comparison of venlafaxine and paroxetine in obsessive-compulsive disorder. J Clin Psychopharmacol 2003; 23(6): 568–75

    Article  PubMed  CAS  Google Scholar 

  39. Findling RL, Schwartz MA, Flannery DJ, et al. Venlafaxine in adults with attention-deficit/hyperactivity disorder: an open clinical trial. J Clin Psychiatry 1996; 57(5): 184–9

    PubMed  CAS  Google Scholar 

  40. Gürkan K, Bilgiç A, Türkoglu S, et al. Depression, anxiety and obsessive-compulsive symptoms and quality of life in children with attention-deficit hyperactivity disorder (ADHD) during three-month methylphenidate treatment. J Psychopharmacol 2010 Dec; 24(12): 1810–8

    Article  PubMed  Google Scholar 

  41. Vallejo J, Olivares J, Marcos T, et al. Clomipramine versus phenelzine in obsessive-compulsive disorder: a controlled clinical trial. Br J Psychiatry 1992 Nov; 161: 665–70

    Article  PubMed  CAS  Google Scholar 

  42. Jenike MA, Baer L, Minichiello WE, et al. Placebo-controlled trial of fluoxetine and phenelzine for obsessive-compulsive disorder. Am J Psychiatry 1997 Sep; 154(9): 1261–4

    PubMed  CAS  Google Scholar 

  43. Fineberg NA, Saxena S, Zohar J, et al. Obsessive-compulsive disorder: boundary issues. CNS Spectr 2007 May; 12(5): 359–64, 367-75

    PubMed  Google Scholar 

  44. Denys D, Zohar J, Westenberg HG. The role of dopamine in obsessive-compulsive disorder: preclinical and clinical evidence. J Clin Psychiatry 2004; 65 Suppl. 14: 11–7

    Google Scholar 

  45. Bloch MH, Landeros-Weisenberger A, Kelmendi B, et al. A systematic review: antipsychotic augmentation with treatment refractory obsessive-compulsive disorder. Mol Psychiatry 2006 Jul; 11(7): 622–32

    Article  PubMed  CAS  Google Scholar 

  46. McDougle CJ, Goodman WK, Leckman JF, et al. Haloperidol addition in fluvoxamine-refractory obsessive-compulsive disorder: a double-blind, placebo-controlled study in patients with and without tics. Arch Gen Psychiatry 1994 Apr; 51(4): 302–8

    Article  PubMed  CAS  Google Scholar 

  47. Saxena S, Wang D, Bystritsky A, et al. Risperidone augmentation of SRI treatment for refractory obsessive-compulsive disorder. J Clin Psychiatry 1996 Jul; 57(7): 303–6

    PubMed  CAS  Google Scholar 

  48. McDougle CJ, Epperson CN, Pelton GH, et al. A double-blind, placebo-controlled study of risperidone addition in serotonin reuptake inhibitor-refractory obsessive-compulsive disorder. Arch Gen Psychiatry 2000 Aug; 57(8): 794–801

    Article  PubMed  CAS  Google Scholar 

  49. Hollander E, Baldini Rossi N, Sood E, et al. Risperidone augmentation in treatment-resistant obsessive-compulsive disorder: a double-blind, placebo-controlled study. Int J Neuropsychopharmacol 2003 Dec; 6(4): 397–401

    Article  PubMed  CAS  Google Scholar 

  50. D’Amico G, Cedro C, Muscatello MR, et al. Olanzapine augmentation of paroxetine-refractory obsessive-compulsive disorder. Prog Neuropsychopharmacol Biol Psychiatry 2003 Jun; 27(4): 619–23

    Article  PubMed  Google Scholar 

  51. Bogetto F, Bellino S, Vaschetto P, et al. Olanzapine augmentation of fluvoxamine-refractory obsessive-compulsive disorder (OCD): a 12-week open trial. Psychiatry Res 2000 Oct 30; 96(2): 91–8

    Article  PubMed  CAS  Google Scholar 

  52. Shapira NA, Ward HE, Mandoki M, et al. A double-blind, placebo-controlled trial of olanzapine addition in fluoxetine-refractory obsessive-compulsive disorder. Biol Psychiatry 2004 Mar 1; 55(5): 553–5

    Article  PubMed  CAS  Google Scholar 

  53. Denys D, Fineberg N, Carey PD, et al. Quetiapine addition in obsessive-compulsive disorder: is treatment outcome affected by type and dose of serotonin reuptake inhibitors? Biol Psychiatry2007 Feb 1; 61(3): 412–4

    Article  PubMed  CAS  Google Scholar 

  54. Fineberg NA, Stein DJ, Premkumar P, et al. Adjunctive quetiapine for serotonin reuptake inhibitor-resistant obsessive-compulsive disorder: a meta-analysis of randomized controlled treatment trials. Int Clin Psychopharmacol 2006 Nov; 21(6): 337–43

    Article  PubMed  Google Scholar 

  55. Atmaca M, Kuloglu M, Tezcan E, et al. Quetiapine augmentation in patients with treatment resistant obsessive-compulsive disorder: a single-blind, placebo-controlled study. Int Clin Psychopharmacol 2002 May; 17(3): 115–9

    Article  PubMed  CAS  Google Scholar 

  56. Denys D, de Geus F, van Megen HJ, et al. A double-blind, randomized, placebo-controlled trial of quetiapine addition in patients with obsessive-compulsive disorder refractory to serotonin reuptake inhibitors. J Clin Psychiatry 2004 Aug; 65(8): 1040–8

    Article  PubMed  CAS  Google Scholar 

  57. Fineberg NA, Sivakumaran T, Roberts A, et al. Adding quetiapine to SRI in treatment-resistant obsessive-compulsive disorder: a randomized controlled treatment study. Int Clin Psychopharmacol 2005 Jul; 20(4): 223–6

    Article  PubMed  Google Scholar 

  58. Mohr N, Vythilingum B, Emsley RA, et al. Quetiapine augmentation of serotonin reuptake inhibitors in obsessive-compulsive disorder. Int Clin Psychopharmacol 2002 Jan; 17(1): 37–40

    Article  PubMed  CAS  Google Scholar 

  59. Pessina E, Albert U, Bogetto F, et al. Aripiprazole augmentation of serotonin reuptake inhibitors in treatment-resistant obsessive-compulsive disorder: a 12-week open-label preliminary study. Int Clin Psychopharmacol 2009 Sep; 24(5): 265–9

    Article  PubMed  Google Scholar 

  60. Metin O, Yazici K, Tot S, et al. Amisulpiride augmentation in treatment resistant obsessive-compulsive disorder: an open trial. Hum Psychopharmacol 2003 Aug; 18(6): 463–7

    Article  PubMed  CAS  Google Scholar 

  61. March JS, Franklin ME, Leonard H, et al. Tics moderate treatment outcome with sertraline but not cognitive-behavior therapy in pediatric obsessive-compulsive disorder. Biol Psychiatry 2007 Feb 1; 61(3): 344–7

    Article  PubMed  Google Scholar 

  62. Matsunaga H, Nagata T, Hayashida K, et al. A long-term trial of the effectiveness and safety of atypical antipsychotic agents in augmenting SSRI-refractory obsessive-compulsive disorder. J Clin Psychiatry 2009 Jun; 70(6): 863–8

    Article  PubMed  CAS  Google Scholar 

  63. McDougle CJ, Price LH, Goodman WK, et al. A controlled trial of lithium augmentation in fluvoxamine-refractory obsessive-compulsive disorder: lack of efficacy. J Clin Psychopharmacol 1991 Jun; 11(3): 175–84

    Article  PubMed  CAS  Google Scholar 

  64. Mula M, Pini S, Cassano GB. The role of anticonvulsant drugs in anxiety disorders: a critical review of the evidence. J Clin Psychopharmacol 2007 Jun; 27(3): 263–72

    Article  PubMed  CAS  Google Scholar 

  65. McDougle CJ, Goodman WK, Leckman JF, et al. Limited therapeutic effect of addition of buspirone in fluvoxamine-refractory obsessive-compulsive disorder. Am J Psychiatry 1993 Apr; 150(4): 647–9

    PubMed  CAS  Google Scholar 

  66. Barr LC, Goodman WK, Anand A, et al. Addition of desi-pramine to serotonin reuptake inhibitors in treatment-resistant obsessive-compulsive disorder. Am J Psychiatry 1997 Sep; 154(9): 1293–5

    PubMed  CAS  Google Scholar 

  67. Stahl SM. Essential psychopharmacology, neuroscientific basis and practical applications. 3rd ed. San Diego (CA): Cambridge University Press, 2008

    Google Scholar 

  68. Pallanti S, Quercioli L, Bruscoli M. Response acceleration with mirtazapine augmentation of citalopram in obsessive-compulsive disorder patients without comorbid depression: a pilot study. J Clin Psychiatry 2004 Oct; 65(10): 1394–9

    Article  PubMed  CAS  Google Scholar 

  69. Koran LM, Gamel NN, Choung HW, et al. Mirtazapine for obsessive-compulsive disorder: an open trial followed by double-blind discontinuation. J Clin Psychiatry 2005 Apr; 66(4): 515–20

    Article  PubMed  CAS  Google Scholar 

  70. Diniz JB, Shavitt RG, Pereira CA, et al. Quetiapine versus clomipramine in the augmentation of selective serotonin reuptake inhibitors for the treatment of obsessive-compulsive disorder: a randomized, open-label trial. J Psychopharmacol 2010 Mar; 24(3): 297–307

    Article  PubMed  CAS  Google Scholar 

  71. Abramowitz JS, Taylor S, McKay D. Obsessive-compulsive disorder. Lancet 2009 Aug 8; 374(9688): 491–9

    Article  PubMed  Google Scholar 

  72. Figee M, Denys D. New pharmacotherapeutic approaches to obsessive-compulsive disorder. CNS Spectr 2009 Feb; 14(2 Suppl. 3): 13–23

    PubMed  Google Scholar 

  73. Van Ameringen M, Mancini C, Patterson B, et al. Topiramate augmentation in treatment-resistant obsessive-compulsive disorder: a retrospective, open-label case series. Depress Anxiety 2006; 23(1): 1–5

    Article  PubMed  Google Scholar 

  74. Coric V, Milanovic S, Wasylink S, et al. Beneficial effects of the antiglutamatergic agent riluzole in a patient diagnosed with obsessive-compulsive disorder and major depressive disorder. Psychopharmacology (Berl) 2003 May; 167(2): 219–20

    CAS  Google Scholar 

  75. Aboujaoude E, Barry JJ, Gamel N. Memantine augmentation in treatment-resistant obsessive-compulsive disorder: an open-label trial. J Clin Psychopharmacol 2009 Feb; 29(1): 51–5

    Article  PubMed  CAS  Google Scholar 

  76. Stewart SE, Jenike EA, Hezel DM, et al. A single-blinded case-control study of memantine in severe obsessive-compulsive disorder. J Clin Psychopharmacol 2010 Feb; 30(1): 34–9

    Article  PubMed  Google Scholar 

  77. Feusner JD, Kerwin L, Saxena S et al. Differential efficacy of memantine for obsessive-compulsive disorder vs. generalized anxiety disorder: an open-label trial. Psychopharmacol Bull 2009; 42(1): 81–93

    Google Scholar 

  78. Hewlett WA, Schmid SP, Salomon RM. Pilot trial of on-dansetron in the treatment of 8 patients with obsessive-compulsive disorder. J Clin Psychiatry 2003 Sep; 64(9): 1025–30

    Article  PubMed  CAS  Google Scholar 

  79. Pallanti S, Bernardi S, Antonini S, et al. Ondansetron augmentation in treatment-resistant obsessive-compulsive disorder: a preliminary, single-blind, prospective study. CNS Drugs 2009 Dec 1; 23(12): 1047–55

    Article  PubMed  CAS  Google Scholar 

  80. Lundberg S, Carlsson A, Norfeldt P, et al. Nicotine treatment of obsessive-compulsive disorder. Prog Neuropsychopharmacol Biol Psychiatry 2004 Nov; 28(7): 1195–9

    Article  PubMed  CAS  Google Scholar 

  81. Taylor LH, Kobak KA. An open-label trial of St. John’s wort (Hypericum perforatum) in obsessive-compulsive disorder. J Clin Psychiatry 2000 Aug; 61(8): 575–8

    CAS  Google Scholar 

  82. Hewlett WA, Vinogradov S, Agras WS. Clomipramine, clonazepam, and clonidine treatment of obsessive-compulsive disorder. J Clin Psychopharmacol 1992 Dec; 12(6): 420–30

    Article  PubMed  CAS  Google Scholar 

  83. Crockett BA, Churchill E, Davidson JR. A double-blind combination study of clonazepam with sertraline in obsessive-compulsive disorder. Ann Clin Psychiatry 2004 Jul–Sep; 16(3): 127–32

    Article  PubMed  Google Scholar 

  84. Pigott TA, L’Heureux F, Rubenstein CS, et al. A doubleblind, placebo controlled study of trazodone in patients with obsessive-compulsive disorder. J Clin Psychopharmacol 1992 Jun; 12(3): 156–62

    Article  PubMed  CAS  Google Scholar 

  85. Insel TR, Hamilton JA, Guttmacher LB, et al. D-amphetamine in obsessive-compulsive disorder. Psychopharmacology (Berl) 1983; 80(3): 231–5

    Article  CAS  Google Scholar 

  86. Joffe RT, Swinson RP, Levitt AJ. Acute psychostimulant challenge in primary obsessive-compulsive disorder. J Clin Psychopharmacol 1991 Aug; 11(4): 237–41

    Article  PubMed  CAS  Google Scholar 

  87. Koran LM, Aboujaoude E, Gamel NN. Double-blind study of dextroamphetamine versus caffeine augmentation for treatment-resistant obsessive-compulsive disorder. J Clin Psychiatry 2009 Nov; 70(11): 1530–5

    Article  PubMed  CAS  Google Scholar 

  88. Amiaz R, Fostick L, Gershon A, et al. Naltrexone augmentation in OCD: a double-blind placebo-controlled cross-over study. Eur Neuropsychopharmacol 2008 Jun; 18(6): 455–61

    Article  PubMed  CAS  Google Scholar 

  89. Dannon PN, Sasson Y, Hirschmann S, et al. Pindolol augmentation in treatment-resistant obsessive compulsive disorder: a double-blind placebo controlled trial. Eur Neuropsychopharmacol 2000 May; 10(3): 165–9

    Article  PubMed  CAS  Google Scholar 

  90. Mundo E, Guglielmo E, Bellodi L. Effect of adjuvant pindolol on the antiobsessional response to fluvoxamine: a double-blind, placebo-controlled study. Int Clin Psychopharmacol 1998 Sep; 13(5): 219–24

    Article  PubMed  CAS  Google Scholar 

  91. Fux M, Benjamin J, Belmaker RH. Inositol versus placebo augmentation of serotonin reuptake inhibitors in the treatment of obsessive-compulsive disorder: a double-blind cross-over study. Int J Neuropsychopharmacol 1999 Sep; 2(3): 193–5

    Article  PubMed  CAS  Google Scholar 

  92. Pallanti S, Quercioli L, Koran LM. Citalopram intravenous infusion in resistant obsessive-compulsive disorder: an open trial. J Clin Psychiatry 2002 Sep; 63(9): 796–801

    Article  PubMed  CAS  Google Scholar 

  93. Koran LM, Sallee FR, Pallanti S. Rapid benefit of intravenous pulse loading of clomipramine in obsessive-compulsive disorder. Am J Psychiatry 1997 Mar; 154(3): 396–401

    PubMed  CAS  Google Scholar 

  94. Koran LM, Pallanti S, Paiva RS, et al. Pulse loading versus gradual dosing of intravenous clomipramine in obsessive-compulsive disorder. Eur Neuropsychopharmacol 1998 May; 8(2): 121–6

    Article  PubMed  CAS  Google Scholar 

  95. Fallon BA, Liebowitz MR, Campeas R, et al. Intravenous clomipramine for obsessive-compulsive disorder refractory to oral clomipramine: a placebo-controlled study. Arch Gen Psychiatry 1998 Oct; 55(10): 918–24

    Article  PubMed  CAS  Google Scholar 

  96. Koran LM, Aboujaoude E, Ward H, et al. Pulse-loaded intravenous clomipramine in treatment-resistant obsessive-compulsive disorder. J Clin Psychopharmacol 2006 Feb; 26(1): 79–83

    Article  PubMed  CAS  Google Scholar 

  97. Vulink NC, Denys D, Fluitman SB, et al. Quetiapine augments the effect of citalopram in non-refractory obsessive-compulsive disorder: a randomized, double-blind, placebo-controlled study of 76 patients. J Clin Psychiatry 2009 Jul; 70(7): 1001–8

    Article  PubMed  CAS  Google Scholar 

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Acknowledgements

No financial support was received to prepare this article. Prof. Zohar has received consultancy fees, research funding and honoraria from Lundbeck, Servier, Pfizer and Solvay. Dr Abudy and Dr Juven-Wetzler have no conflicts of interest that are relevant to the content of this article. The authors wish to thank Rachel Sonnino for her assistance in the preparation of this article.

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Abudy, A., Juven-Wetzler, A. & Zohar, J. Pharmacological Management of Treatment-Resistant Obsessive-Compulsive Disorder. CNS Drugs 25, 585–596 (2011). https://doi.org/10.2165/11587860-000000000-00000

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