Cleveland Clinic logo
Search

Paroxysmal Cough

Medically Reviewed.Last updated on 01/19/2026.

A paroxysmal cough is a sudden, uncontrollable cough. It can make it difficult to breathe and might make you vomit or faint. Common causes include pertussis, pneumonia and other respiratory infections. Asthma, COPD and other chronic lung and airways diseases can also cause it. Corticosteroids, bronchodilators and treating infections can help.

What Is Paroxysmal Cough?

Paroxysmal cough is an uncontrollable coughing fit. It’s often violent and keeps you from getting a breath. You might gag, vomit or even pass out.

Advertisement

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

You cough when something irritates your airways. It’s your body’s way to force out mucus, germs and other irritants. Sometimes, your airways overreact with violent muscle spasms. This might happen after you’ve had a respiratory infection, during an asthma attack or any other time your airways are inflamed.

Possible Causes

Paroxysmal cough causes

The most common cause of paroxysmal cough is pertussis (whooping cough). But anything that makes you cough can cause it. Other common causes include:

Rarely, lung tumors cause sudden, violent coughing.

Care and Treatment

Paroxysmal cough treatments

Treatments for coughing fits depend on the cause. Treatments could include:

In severe cases, your provider might suggest a nerve block to reduce your cough reflex.

What can I do at home?

Paroxysmal cough can be hard to manage with at-home treatments. But there might be some that can help calm or prevent coughing fits. These include:

  • Cough drops, throat lozenges and throat sprays: These can sometimes help relieve the tickly or scratchy feeling you get when you need to cough.
  • Cough suppressants: Cough suppressants like dextromethorphan help calm the part of your brain that tells you to cough.
  • Decongestants: Decongestants might help if you have postnasal drip that’s causing or making your cough worse.
  • Expectorants: Expectorants like guaifenesin can help you cough up what’s irritating your airways.

Advertisement

You might also need to avoid anything that brings on the paroxysmal cough. These could include talking or irritants like smoke. Drinking plenty of water, using a humidifier and sitting in a steamy shower can help loosen mucus that makes you cough.

Complications

Forceful coughing can lead to:

  • Asthma attacks
  • Difficulty breathing
  • Choking
  • Fainting
  • Headache
  • Muscle pain and strains
  • Rib fractures
  • Vomiting

Coughing fits can also interfere with your quality of life. It can be hard to get through meetings or conversations with friends. They can even make it dangerous to drive.

When To Call the Doctor

When should I see a doctor about coughing fits?

Talk to a healthcare provider if you’re experiencing paroxysmal cough. You might need treatment for a bacterial infection. If a cough is making you vomit or keeping you from breathing, talking or swallowing, call 911 (or your local emergency service number) or go to the emergency room.

A note from Cleveland Clinic

Paroxysmal cough isn’t just any cough. It’s violent and can leave you gasping for air. Don’t hesitate to get help if you can’t stop coughing or can’t get a breath. A healthcare provider can help you treat the root cause and calm the coughing fits.

Advertisement

Experts You Can Trust

Medically Reviewed.Last updated on 01/19/2026.

Learn more about the Health Library and our editorial process.

References

Cleveland Clinic's health articles are based on evidence-backed information and review by medical professionals to ensure accuracy, reliability, and up-to-date clinical standards.

Care at Cleveland Clinic

Need care fast? Cleveland Clinic’s Express Care and Urgent Care locations treat everything from sprains to sinus infections — no appointment needed.

Ad