What a fainting attack can mean

People often feel light-headed, weak, hot or nauseated first, then become briefly unresponsive and regain awareness without prolonged confusion. Standing still, pain, emotional stress, illness, dehydration, missed meals or some medicines may lower blood pressure enough to trigger this pattern. Anaemia, low blood sugar and abnormal heart rhythms are other possibilities. The event itself does not reveal which explanation applies, so details from anyone who saw it are useful.

Protect the person from injury, lay them flat and loosen tight clothing. Check that they are breathing normally and stay with them while they recover. Do not give food, drink or tablets until they are fully alert. Once awake, let them rest before sitting and standing slowly. Record what happened immediately beforehand, how long recovery took and any new medicine, illness or injury.

Call emergency services for breathing difficulty, chest pain, severe palpitations, a seizure, major injury, persistent confusion or failure to regain consciousness. Urgent assessment is also needed when fainting occurs during exertion, while lying down, or without warning. A clinician should review a first episode, recurrent attacks and episodes in someone with known heart disease.

Ask what triggers are plausible, whether your blood pressure and pulse need checking in different positions, and whether blood tests or an electrocardiogram would help explain the episode.