Heartburn is a burning feeling in the chest caused by stomach acid travelling up towards the throat (acid reflux)
The main symptoms of acid reflux are:
- heartburn – a burning sensation in the middle of your chest
- an unpleasant sour taste in your mouth, caused by stomach acid
You may also have:
- a cough or hiccups that keep coming back
- a hoarse voice
- bad breath
- bloating and feeling sick
Symptoms are often worse after eating, when lying down and when bending over.
Sometimes heartburn can be caused or made worse by:
- certain food and drink – such as coffee, tomatoes, alcohol, chocolate and fatty or spicy foods
- being overweight
- smoking
- pregnancy
- stress and anxiety
- an increase in some types of hormones, such as progesterone and oestrogen
- some medicines, such as anti-inflammatory painkillers (like ibuprofen)
- a hiatus hernia – when part of your stomach moves up into your chest
- a stomach ulcer
- a bacterial infection in your stomach


