Why does hypoglycaemia cause dizziness?

The brain relies heavily on glucose. As levels fall, you may feel lightheaded, unsteady, weak, detached, or unable to concentrate. Dizziness is a very common presentation of Hypoglycaemia, yet dizziness can also arise from dehydration, an inner-ear problem, medicines, illness, or changes in blood pressure.

The body may release stress hormones during a low-glucose episode. Shaking, sweating, hunger, a racing heartbeat, anxiety, and headache can accompany the dizzy feeling. Recognising your own early signs can help you act before you become too confused to manage the episode.

Sit or lie down straight away to reduce the chance of falling. If you are fully awake and can swallow, use the fast-acting carbohydrate and monitoring instructions in your personal diabetes plan. Do not drive, cycle in traffic, use machinery, or take a shower alone while you feel dizzy.

Once you feel better, consider what preceded the symptoms, such as a missed meal, extra activity, vomiting, alcohol, or medicine. Note any glucose reading and the treatment used for your next clinical review.

Call emergency services if a person loses consciousness, has a seizure, cannot safely swallow, becomes very confused, or fails to respond to their prescribed rescue plan. Arrange timely medical advice if dizziness keeps returning, occurs without diabetes treatment, causes an injury, or is joined by chest pain, new weakness, trouble speaking, or a severe headache.

Ask how to distinguish your early low-glucose symptoms from other causes of dizziness, whether your medication schedule needs review, and what safety measures are appropriate for work, exercise, and travel.