A 30-year-old woman experiences episodes of increased energy and decreased need for sleep. What is her likely diagnosis?

The symptoms described in the scenario indicate a pattern consistent with a mood disorder characterized by episodes of increased energy and decreased need for sleep. In this case, the likely diagnosis is Bipolar I disorder, which is characterized by one or more manic episodes, potentially followed by depressive episodes.

Bipolar I disorder includes episodes where the individual can experience a significant elevation in mood, increased activity, and decreased need for sleep, suggesting a manic phase. The presence of these symptoms alone can often point towards this diagnosis. While the specific mention of episodes of increased energy and decreased sleep aligns with manic presentations, Bipolar II disorder involves at least one depressive episode and at least one hypomanic episode, but not a full manic episode.

In terms of the other options, attention deficit hyperactivity disorder (ADHD) primarily features issues with attention, impulsivity, and hyperactivity rather than distinct episodes of mood elevation. Cyclothymic disorder involves numerous periods of hypomanic symptoms and depressive symptoms lasting for at least two years, but does not meet the full criteria for a manic or major depressive episode.

Given the nature of the symptoms, Bipolar I disorder aligns most closely with the details provided in the vignette, making it the most appropriate diagnosis in this