Jul 29, 2025 · Symptoms Common anxiety signs and symptoms include: Feeling nervous, restless or tense. Having a sense of impending danger, panic or doom. Having an increased heart rate. …

Jul 2, 2024 · The brain and nervous system The brain contains billions of nerve cells arranged in patterns that coordinate thought, emotion, behavior, movement and sensation. A complicated …

Nov 1, 2024 · In multiple sclerosis, the protective coating on nerve fibers, known as myelin, in the central nervous system is damaged. Depending on the location of the damage in the central nervous …

Dec 20, 2024 · Feeling nervous or anxious about public speaking is common, but it also can be motivating. Fear of public speaking is a form of performance anxiety, along with stage fright and test …

Jul 7, 2022 · Autonomic neuropathy occurs when there is damage to the nerves that control automatic body functions. It can affect blood pressure, temperature control, digestion, bladder function and …

Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.

Dec 20, 2024 · Overview Vagus nerve stimulation involves using a device to send electrical impulses to the vagus nerve. The vagus nerve is the main nerve of the system that controls digestion, heart rate …

The Mayo Clinic Department of Neurology is one of the largest and most comprehensive neurological practices in the world. It includes more than 200 experts in diagnosing and treating more than 500 …

Oct 14, 2025 · Epilepsy is a brain condition that causes recurring seizures. There are many types of epilepsy. In some people, the cause can be found. In others, the cause is not known. Epilepsy also is …

Niacin is a B vitamin the body makes. The body uses niacin to turn food into energy. It helps keep the nervous system, digestive system, and skin healthy. People may take niacin, also called vitamin B-3, …