Major Depressive Disorder

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Since its initial description by Kahlbaum (1828-1899) over a century ago, catatonia has been associated with psychiatric, neurologic, and medical disorders. Contemporary authors view catatonia as a syndrome of motor signs in association with disorders of mood, behavior, or thought. Some motor features are classic but infrequent (eg, echopraxia, waxy flexibility) while others are common in psychiatric patients (eg, agitation, withdrawal), becoming significant because of their duration and severity.

There are dozens of books on the market aimed at helping the general public recognize depression; there are far fewer that focus specifically on the more subtle forms of bipolar disorder. This disparity has its clinical parallel in the over-diagnosis of unipolar depression among patients who ultimately prove to have a bipolar disorder. Indeed, survey data suggest that there is typically a 7-year delay in the correct diagnosis of bipolar spectrum disorder.

Deep brain stimulation (DBS) may hold promise for patients with treatment-resistant and severe major depression and obsessive-compulsive disorder (OCD). However, it may not be the best choice for patients with Parkinson (PD) disease who display certain compulsive behaviors, reported researchers from the Cleveland Clinic and from Brown Medical School (Providence, Rhode Island) at the annual meeting of the American Academy of Neurological Surgeons, which took place April 22-27 in San Francisco.

Dr Ronald Pies questions the statements in regards to antidepressant response time from an October 2005 article in Psychiatric Times.