Anxiety and lightheadedness

Overbreathing can lower carbon dioxide in the blood and lead to a faint, floaty feeling, tingling or blurred vision. Stress hormones may add a racing heartbeat, sweating and shakiness. These sensations are real even when anxiety contributes.

Lightheadedness often feels as though you might faint, whereas vertigo feels like you or the surroundings are moving. Imbalance is another distinct sensation. Explaining which description fits, what you were doing and how suddenly it began helps guide assessment.

Other causes include dehydration, low blood glucose, anaemia, heat illness, medicine effects, changes in blood pressure, inner-ear disorders and heart rhythm problems. Anxiety may occur alongside any of these, so feeling worried during an episode does not identify its cause.

Sit or lie down to prevent a fall, loosen tight clothing and move away from heat. Breathe gently through the nose and allow a longer, unforced exhalation. Sip fluid if you can swallow safely and dehydration is possible; do not use paper-bag breathing.

Record the episode's onset, position, activity, meals, heat exposure, medicines and accompanying heartbeat, hearing or neurological symptoms. Arrange a clinical review if episodes return, arise with exertion, cause a fall or interfere with driving and everyday activity.

Call emergency services if lightheadedness comes with fainting, chest pain, severe breathlessness, a new irregular or very rapid heartbeat, sudden severe headache, new weakness or numbness on one side, facial droop, difficulty speaking, confusion or loss of coordination.

Prompt assessment is also needed after significant bleeding, repeated vomiting or diarrhoea, heat exposure with worsening illness, or an episode during exercise. Until the cause is clear, avoid driving, climbing or operating machinery when symptoms could recur.

Ask whether your description suggests faintness, vertigo or imbalance; whether blood pressure, heart rhythm, blood tests or a medicine review are appropriate; and how to manage anxiety without overlooking physical triggers.