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Catarrh

Catarrh is a build-up of mucus in your nose and sinuses, and phlegm in your throat. It usually clears up by itself but see a GP if it lasts longer than a few weeks.

Symptoms of catarrh

You may get catarrh if you have an infection like a cold, flu or sinusitis.

Symptoms of catarrh include:

  • a constantly blocked or runny nose
  • feeling like there's a lump or something stuck in your throat
  • a frequent need to swallow or cough to try to clear your throat
  • a feeling that mucus is slowly dripping down the back of your throat (postnasal drip)
  • a crackling feeling in your ears

These symptoms usually only last a few days, but sometimes they can last longer.

Things you can do to help ease catarrh

Although catarrh can be annoying, phlegm and mucus are not harmful and are the body's way of clearing infection.

It usually goes away by itself, but there are some things you can do to help ease the symptoms.

Do

  • drink plenty of water

  • sip ice-cold water when you need to clear your throat, rather than coughing or swallowing

  • try using a humidifier, or sitting in the bathroom with a hot shower running, to help loosen the mucus in your nose and throat

  • try gargling with salt water

  • try rinsing your nose with salt water

How to rinse your nose with a homemade salt water solution
  1. Boil a pint of water, then leave it to cool.
  2. Mix 1 teaspoon of salt and 1 teaspoon of bicarbonate of soda into the water.
  3. Wash your hands.
  4. Stand over a sink, cup the palm of 1 hand and pour a small amount of the solution into it.
  5. Sniff the water into 1 nostril at a time. Breathe through your mouth and allow the water to pour back into the sink. Try not to let the water go down the back of your throat.
  6. Repeat the first 5 steps up to 3 times a day until your nose feels more comfortable.

Any unused solution will keep for the rest of the day in a clean, covered container. But make a fresh solution at the start of each day.

A pharmacist can help with catarrh

You could ask a pharmacist about:

  • decongestants and other medicines to help relieve catarrh
  • salt water nose rinses – you can get several types, including specially designed bottles, nasal sprays and sachets
Find a pharmacy

Non-urgent advice: See a GP if:

  • you have the symptoms of catarrh for more than a few weeks
  • you get new symptoms, such as a sore throat, problems swallowing or loss of sense of smell

The GP may want to rule out other conditions that could be causing your catarrh, such as nasal polyps.

Treatments from a GP

A GP may suggest trying treatments for catarrh that you can get from a pharmacist, like decongestant medicines and salt water nose rinses.

Causes of catarrh

Catarrh is your body's natural reaction to things like infection.

The lining in your nose, sinuses and throat becomes swollen and creates more mucus than normal.

Causes of catarrh include:

  • infections like cold, flu and sinusitis
  • pollution and cigarette smoke
  • allergic reactions to things like pollen, dust and animals
  • conditions that affect the nose, such as nasal polyps

Page last reviewed: 16 June 2026
Next review due: 16 June 2029