A stye usually only affects 1 eye, but it's possible to have more than 1 at a time and on both eyes.

It's probably not a stye if:

• there's no lump – if your eye or eyelid is swollen, red and watery it's more likely to be conjunctivitis or blepharitis
• the lump is hard but not very painful – this is more likely to be a chalazion

Find out more about chalazions on the Moorfields Eye Hospital website

To reduce swelling and help the stye heal:

1. Soak a clean flannel in warm water.
2. Hold it against your eye for 5 to 10 minutes.
3. Repeat this 2 to 4 times a day.

To relieve the pain, take painkillers such as paracetamol or ibuprofen. Do not give aspirin to children under 16.

Avoid wearing contact lenses and eye make-up until the stye has burst and healed.

Do not burst a stye

Do not try to burst a stye or remove an eyelash yourself. This can spread the infection.

See a GP if:

Ask for an urgent GP appointment or get help from NHS 111 if:

If you have a stye, the GP may:

• burst the stye with a thin, sterilised needle
• remove the eyelash closest to the stye
• refer you to an eye specialist in hospital

You can help avoid stye by keeping your eyes clean.

Styes are often caused by bacteria infecting an eyelash follicle or eyelid gland.

You're also more likely to get a stye if you have long-term blepharitis or rosacea.