Why does generalised anxiety disorder cause palpitations?

When the brain senses threat or prolonged worry, it can release stress hormones that prepare the body for action. This can increase awareness of each heartbeat, produce a racing or fluttering sensation, and make skipped beats feel more noticeable. Palpitations is a very common presentation of Generalised Anxiety Disorder, but the sensation can also have physical causes such as stimulant use, an abnormal heart rhythm, anaemia or thyroid problems.

Symptoms may be more noticeable during worry, after caffeine, nicotine or alcohol, or when sleep has been poor. A clinician can consider the pattern alongside your health history and any medicines or supplements.

Sit down if you feel light-headed and slow your breathing: breathe in gently, then make the out-breath longer and unforced. Loosen tight clothing and move away from heat or a busy setting if possible. Note what you were doing, how long the feeling lasted, and whether it started suddenly or built gradually.

Arrange a routine appointment if episodes recur. Support for anxiety may include talking therapy, practical coping strategies, and medicines when they are suitable for you. Do not stop prescribed treatment abruptly without medical advice.

Seek emergency care for palpitations with chest pain, fainting, severe shortness of breath, new confusion, or a sustained feeling of being very unwell. Get prompt medical advice if the episodes are new, becoming more frequent, happen during exercise, or occur with a known heart condition.

Ask whether your symptoms suggest a heart rhythm check, blood tests, or a review of caffeine, decongestants, inhalers and supplements. You can also ask which anxiety treatments fit your symptoms and medical history.