1 learning resource available for this topic
Bipolar disorder is a chronic mental health condition characterized by alternating episodes of mania or hypomania and major depression, affecting approximately 1-3% of the global population. The disorder typically emerges in late adolescence or early adulthood and requires lifelong management with mood stabilizers, psychotherapy, and lifestyle modifications.
The disorder involves dysregulation of neurotransmitter systems, particularly dopamine, serotonin, and norepinephrine, along with abnormalities in brain circuits controlling mood, cognition, and behavior. Genetic factors contribute significantly to risk, with heritability estimates of 60-85%, while environmental stressors, circadian rhythm disruptions, and substance use can trigger episodes in vulnerable individuals.
Diagnosis requires careful assessment of mood episode patterns, family history, and exclusion of medical causes or substance-induced symptoms, as misdiagnosis with unipolar depression is common. Treatment selection depends on the current mood state, episode severity, patient factors, and potential side effects, with lithium, anticonvulsants, and atypical antipsychotics serving as first-line mood stabilizers.