Several conditions can cause a person’s hand or hands to feel numb. In this article, learn more about the causes and how to treat them.

The autonomic nervous system is a complex network of cells that control the body’s internal state. Read on to discover how it works.

Brain atrophy can refer to a loss of brain cells or a loss in the number of connections between these cells. In this article, learn about the symptoms of brain atrophy, as well as some causes and treatments.

Vasovagal syncope is fainting that occurs in response to a sudden drop in blood pressure or heart rate. Learn about its causes, symptoms, and treatment here.

Arm numbness has many possible causes, from sleeping on the arm and cutting off the circulation to serious issues, such as a stroke. Learn more about these and other causes here.

A cerebrospinal fluid leak involves the fluid escaping from the spine or a tear in the brain’s protective covering. Read on to learn more.

Dysarthria is a type of speech disorder that occurs due to muscle weakness. Learn about the causes of dysarthria and the available treatment options here.

It can be difficult to convince others to change their minds about a topic, sometimes even despite compelling evidence. Why? What happens in the brain?

Playing the drums requires coordination between all four limbs. A new study asks whether, over years of practice, this alters the brain’s architecture.

New research in mice suggests that a leaky blood-brain barrier can accelerate brain aging, and that targeting inflammation can reverse some changes.