Fainting is a brief loss of consciousness from a temporary drop in blood flow to the brain. Most is harmless (a simple faint), but some points to the heart.
Most faints are harmless, but fainting during exertion, with chest pain or palpitations, or with a family history of sudden death, needs prompt heart checks.
Stay hydrated, rise slowly, avoid long standing in heat, and lie down or sit with your head low if you feel the warning signs (light-headedness, sweating, tunnel vision).
MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.