What does fainting feel like with hypoglycaemia?

The brain depends on glucose for energy. When blood sugar falls, the body may release stress hormones that cause sweating, trembling, hunger, and a pounding heartbeat. Further decline can affect concentration, speech, behaviour, coordination, and awareness. A faint can occur, but fainting has several possible causes and does not by itself prove hypoglycaemia. A glucose reading, symptoms, and the surrounding circumstances help clinicians assess the episode.

If the person is awake and can swallow safely, give a fast-acting sugary drink or glucose product, then reassess after a short interval and follow their diabetes plan. Do not give food or drink to someone who is unconscious, confused, or having a seizure. Place them on their side, check breathing, and use prescribed rescue medicine only if trained to do so.

Call emergency services for unconsciousness, seizure-like movements, trouble breathing, serious injury, ongoing confusion, inability to swallow, or symptoms that do not improve after treatment. Repeated episodes, unexplained fainting, or low readings in someone not using glucose-lowering medicine also need medical review.

Ask what glucose target and rescue plan apply to you, how medicines, missed meals, exercise, or alcohol may contribute, and when to adjust treatment. Keep a record of symptoms, readings, meals, activity, medicines, and recovery time.