
Anxiety disorders - Symptoms and causes - Mayo Clinic
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. …
Nervous breakdown: What does it mean? - Mayo Clinic
Apr 26, 2023 · Nervous breakdown isn't a medical term. It most often means a mental health crisis that affects your ability to meet your own needs and do daily tasks.
Fear of public speaking: How can I overcome it? - Mayo Clinic
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 …
Multiple sclerosis - Symptoms and causes - Mayo Clinic
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 …
Mindfulness exercises - Mayo Clinic
Jan 20, 2026 · Stress. Mindfulness calms the nervous system. This reduces the body's stress hormone, cortisol. Anxiety. Mindfulness can ease anxiety by helping you stay focused in the present instead of …
Epilepsy - Symptoms and causes - Mayo Clinic
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 - Mayo Clinic
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, …
Medical Diseases & Conditions - Mayo Clinic
Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.
Methylphenidate (oral route) - Side effects & dosage
Feb 1, 2026 · Description Methylphenidate is used to treat attention deficit hyperactivity disorder (ADHD). It belongs to the group of medicines called central nervous system (CNS) stimulants. …
Vagus nerve stimulation - Mayo Clinic
Dec 20, 2024 · 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 and other …