Medically reviewed by Richard N. Fogoros, MD Key Takeaways Vasovagal syncope often happens when standing or sitting up ...

Dysautonomia is a broad term for conditions that range from fainting to more serious life threatening conditions. Some are quite common, and some are extremely rare. Dysautonomia is a nervous system ...

Fainting or blacking out, also known as syncope, is a temporary loss of consciousness due to insufficient blood flow to the brain. Dreamstime/TNS You may have heard that people who feel faint should ...