New research shows PD’s diverse symptoms may stem from problems in a single brain circuit in the motor cortex, suggesting it ...

Wondering what really causes borderline PD? New neuroscience discoveries suggest that genetics and brain irregularities may ...

Bipolar disorder is a long-term mood disorder characterized by major fluctuations in mood — both high and low — that can impact daily functioning and behavior. Although bipolar disorder is a chronic ...

Approximately 41,000 Americans live with a rare, genetic, degenerative disorder that is described as a combination of ALS, Alzheimer’s and Parkinson’s called Huntington’s Disease.

Where mood disorders can cause temporary or fluctuating changes in mood, personality disorders cause symptoms that remain consistent over time and across a range of situations. For example, bipolar ...

Why are eating disorders often misunderstood? Many struggle, few are diagnosed: The reality of eating disorders ...

Conversion disorder is a psychiatric condition in which a person has neurological symptoms like paralysis or blindness with no physiological cause. In the past, such events were often described as ...

Editor's note: This story discusses disordered eating. Eating disorders in children and teens can be hard for parents to understand. TODAY.com talked to experts to find out what parents and all family ...