major depression

(redirected from Unipolar disorder)
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Related to Unipolar disorder: bipolar disorder, hypomania, depressive syndrome

major depression

[′mā·jər di′presh·ən]
(psychology)
A type of affective disorder characterized by major episodes of depression without intervening manic episodes.
References in periodicals archive ?
Specifically, higher rates of anxiety disorders are observed with unipolar disorder compared with bipolar patients, similar to the adult population.
Post hoc Tukey's HSD test results indicated that the level of perceived EE in patients with unipolar disorder was significantly higher than those in the other three illness groups (schizophrenia, psychotic disorders, and bipolar disorder; P < 0.01) while the EE levels in schizophrenia and psychotic disorders were also significantly higher than that in bipolar disorder (P < 0.03 and <0.01, resp.).
The Amish have been studied quite intensively, and it does appear, in the Amish in Pennsylvania, that the rate of bipolar disorder is about equal to the rate of unipolar disorder, which would mean that mania may be relatively more common in that population.
Patients with unipolar disorder who fail on lithium often are given an antidepressant drug alone or in combination with lithium.
Mania may be easily mistaken for attention-deficit hyperactivity disorder (ADHD) or conduct disorder; depression can look like "textbook" unipolar disorder, he noted.
Research has also linked high levels of EE to relapse in bipolar and unipolar disorder, she said.
Ying and his colleagues evaluated 355 patients experiencing an acute episode of unipolar disorder, 83 in the depressed phase of bipolar I disorder, and 77 in the depressed phase of bipolar II disorder.
Comorbidity for obsessive-compulsive disorder in bipolar and unipolar disorders. Psychiatry Res.