What should you know about compulsive syncope?

Syncope means a brief loss of consciousness caused by temporarily reduced blood flow to the brain, followed by recovery. People may faint after prolonged standing, heat, pain, fear, dehydration, or a sudden drop in blood pressure. Other possibilities include anaemia, low blood sugar, or an abnormal heart rhythm. The word compulsive may describe a concern about repeated episodes, but it does not identify the cause. Details such as warning symptoms, posture, exertion, injury, palpitations, and recovery help a clinician distinguish patterns.

If you notice warmth, nausea, sweating, tunnel vision, or sudden weakness, lie flat with your legs raised if possible. If someone faints, protect them from injury, check breathing, and place them on their side if they are breathing but not fully alert. Do not give food or drink until they are awake and able to swallow. Keep a record of what happened before, during, and after each event, including medicines, meals, fluid intake, and any jerking or confusion.

Call emergency services for fainting during exercise or while lying down, chest pain, breathlessness, a new irregular heartbeat, severe injury, prolonged unresponsiveness, seizure-like activity, or new weakness or speech trouble. Arrange prompt medical review for a first faint, repeated episodes, no warning, or a family history of sudden cardiac death. Until assessed, avoid driving or hazardous heights if another episode could put you or someone else at risk.

Could my medicines, fluid balance, blood count, glucose, or heart rhythm be involved? Do I need blood pressure checks lying and standing, an ECG, or further monitoring? What activities should I pause while this is assessed?