Obsessions
By Alen J. Salerian, MD
The high point of my graduation from medical school was a dinner celebration on Princess Island off the coast of Istanbul as cheers and toasts were finally fading. I was surrounded by happy faces and watery eyes in all directions when my cousin Joe, a skinny, tall man known to us as “Nervous Joe,” spoke loudly on a Friday evening some 25-plus years ago. “Come on Alen, now that you are a real doctor, tell me, what can you do for my hands?” with both of his hands and arms extended, over half-filled wine glasses, we all stared at his red, chapped hands.
Hmm! What help could I offer? There were too many possibilities. “Hey, Joe, you need a dermatologist!” I offered.
A phone call, a visit, and a few weeks later, cousin Joe shared with me his diagnosis: Compulsive hand washing secondary to obsessive-compulsive disorder (OCD).
There was a time not many centuries ago when OCD was viewed as a satanic possession treatable with exorcism. Not until the mid 1980s did we discover that OCD was not a rare disease. The Epidemiologic Catchment Area Study that the National Institute of Mental Health sponsored identified a lifetime prevalence rate of OCD in about 2.5% of the general population, greater than the rate of panic disorder or schizophrenia.
Increasingly, the profession is recognizing that for most patients OCD is a lifelong illness. Approximately 65% of patients develop OCD before age 25 and less than 15% of patients will develop the disorder after age 36.
Postulated Causes
The past century has witnessed a gradual transformation of the theories explaining the underlying causes of OCD. No longer can Freudian psychodynamic explanations of OCD survive scientific scrutiny. Still, the exact causes of OCD are not known. Yet, there seems to be increasing evidence that biological factors play an important role and that genetic and environmental factors may contribute to particular symptoms.
Serotonergic dysregulation has been proposed as the basis of OCD. And not surprisingly, the most efficacious agents for OCD have been SSRIs or medications that have potent effects on selective serotonin reuptake inhibition such as clomipramine. A number of studies suggest a genetic link to OCD. Some report that about 25% of OCD patients have a first-degree relative with OCD.
Comorbidity
Statistics strongly suggest that patients with OCD may present with other psychiatric disorders. At the time of OCD diagnosis, 31% of patients suffer from major depression, and the prevalence of depression in OCD patients ranges from 67% to 78%. Similarly, the lifetime prevalence of a core existing anxiety disorder is also high, ranging from 22% to 28% for simple phobias and 12% to 15% for panic disorder.
Treatment Strategies
During the past several decades, various treatment strategies including pharmacotherapy, behavior therapy, and psychosurgery emerged as somewhat effective in treating OCD.
Pharmacotherapy
Approximately 65% to 75% of patients with OCD report moderate improvements with serotonergic agents. In spite of the relatively dirty effect profile (i.e., dizziness, weight gain, constipation, somnolence and dry mouth), many clinicians still view clomipramine (Anafranil) as the gold standard of OCD treatment. Understandably, because of their more favorable side effect profiles, SSRIs (fluoxetine, fluvoxamine, sertraline, paroxetine) should be considered first.
Two factors, inadequate dosage and inadequate duration of treatment, have often been linked to treatment failures. A 12-week trial with dosages up to 300 mg of clomipramine, 200 mg with sertraline, 80 mg with fluoxetine, 300 mg with fluvoxamine, and 60 mg with paroxetine are necessary prior to a realistic evaluation of medication efficacy. In spite of early disappointing results with various psychological treatments such as psychoanalytic psychotherapy, relaxation therapy, hypnosis, and biofeedback, the past decade also witnessed the positive outcome of behavior therapy for patients with OCD.
Electroconvulsive Treatment
How about electroconvulsive treatment (ECT) or augmentation strategies? To date, there has not been any convincing evidence to support using ECT for OCD patients. And unlike treatment-resistant depressed patients who may respond favorably to adjunct lithium, liothyronine, methylphenidate or buspirone, the current psychiatric literature remains, at best, controversial about the efficacy of augmenting agents for OCD when monotherapy fails.
Psychosurgery
What about psychosurgery? Ever since its introduction, psychosurgery has offered hope and triggered apprehension for patients with OCD. And rarely has a medical approach been vilified as much as psychosurgery has. Yet, few people know much about the recent reports indicative of moderate success for treatment-resistant patients with OCD.
Even though using very conservative outcome criteria, different studies suggest a 41% to 56% moderate improvement; the current psychiatric consensus remains unchanged. Consider psychosurgery only for severely incapacitated patients for whom all other treatments failed.
More on OCD from DSM-IV
According to the DSM-IV, OCD is classified as one of the anxiety disorders. OCD may be diagnosed if the patient demonstrates obsessions or compulsions that cause marked distress, are time consuming (generally an hour or more per day), or significantly interfere with social or role functioning.
Obsessions are defined by:
-Recurrent and persistent thoughts, impulses or images that are experienced, at some point during the disturbance, as intrusive and inappropriate, and cause marked anxiety or distress.
-The thoughts, impulses, or images are not simply excessive worries about real-life problems.
-The person attempts to ignore or suppress such thoughts or impulses or neutralizes them with some other thought or action.
-The person recognizes that the obsessional thoughts, impulses, or images are a product of his or her own mind (not imposed from without as in thought insertion).
Compulsions are defined by:
-Repetitive behaviors (e.g., handwashing, ordering, or checking) or mental acts (e.g., praying, counting or repeating words silently) that are performed in response to an obsession, or according to rules that might be applied rigidly.
-The behaviors or mental acts are aimed at preventing or reducing distress or preventing some dreaded event or situation; however, these behaviors or mental acts either are not connected in a realistic way with what they are designed to neutralize or prevent or are clearly excessive.