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You finally shook that cold weeks ago. So why are you still coughing? Maybe it wakes you at night, or it shows up every time you walk into a certain room. People start giving you that look in the grocery store line.
A cough that won't quit is tiring, and it's easy to feel like you've tried everything. The good news is that a chronic cough usually has a findable cause, and allergies are one of the common ones. Here's what to know, and what to write down before you see your doctor.
When Does a Cough Become Chronic?
Coughing is your body's way of clearing your airways, so a short cough with a cold is normal. A cough that lingers is different. The American Academy of Allergy, Asthma and Immunology (AAAAI) says chronic cough is usually defined as one that lasts 6 weeks or longer.
So what keeps it going?
The Most Common Causes of Chronic Cough
The American College of Allergy, Asthma and Immunology (ACAAI) says most chronic coughs trace back to a short list:
- Postnasal drip. Mucus drains down the back of your throat and keeps it irritated.
- Asthma. AAAAI notes that asthma can show up as a cough without wheezing or the other usual signs.
- GERD (gastroesophageal reflux disease). Stomach acid backs up into your throat. AAAAI points out that you may not feel heartburn at all, only the cough.
- Chronic bronchitis and smoking. Both keep the airways inflamed.
Medicines can play a part too. AAAAI says some blood pressure medicines called ACE inhibitors can cause a cough. And more than one cause is often involved at the same time, which is why a cough can be tricky to sort out.
How Allergies Fit In
According to ACAAI, an allergy cough comes from your immune system reacting to an allergen, not from an infection. Common triggers include dust, pet dander, pollen, and mold. AAAAI lists allergic rhinitis (hay fever) with postnasal drip as one of the leading causes of chronic cough.
Allergies may be part of the picture if your cough follows the seasons or gets worse in certain places. Sneezing and a stuffy nose are other clues. If you're not sure whether you're dealing with a cold or allergies, our guide on how to tell a cold from allergies can help. A cough that starts first thing in the morning may also connect to what's happening in your bedroom overnight.
What to Track Before Your Appointment
ACAAI suggests noting when your cough happens and what comes with it. A simple log gives your doctor a head start. Try writing down:
- When the cough is worst, such as at night, lying down, after meals, or outdoors.
- Where it happens, such as the bedroom, around pets, or at work.
- What comes with it, like sneezing, congestion, wheezing, or heartburn.
- Every medicine you take, including over-the-counter products and supplements. AAAAI recommends bringing this list to your appointment.
- Anything new at home, like a new pet, new bedding, or a recent move.
AAAAI suggests seeing an allergist/immunologist as an important first step. An allergist can use skin or blood tests to look for specific triggers. Our posts on which allergy test is right for you and what to expect at your first allergist appointment walk you through it.
If Dust Mites Turn Out to Be a Trigger
The bedroom is a good place to start, since you spend hours there breathing close to your pillow and mattress. Zippered covers from our AllergyCare Cotton collection help block dust mite allergen in your bed. For more ways to cut allergens around the house, see our Practical Guide to Allergy-Free Living.
Your next step: Start a cough log today. A week of notes can turn "I just keep coughing" into real clues, and that's a win for you and your doctor.
Wishing you the best of health,
Cheryl
Sources
- American Academy of Allergy, Asthma and Immunology, What Is Chronic Cough Syndrome?: https://www.aaaai.org/tools-for-the-public/conditions-library/asthma/what-is-chronic-cough-syndrome
- American College of Allergy, Asthma and Immunology, Cough: https://acaai.org/allergies/symptoms/cough/
Medical Disclaimer: The information on this page is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider — such as an allergist or your primary care physician — before making changes to your allergy management plan, starting new treatments, or if you have questions about a medical condition. In the event of a severe allergic reaction or anaphylaxis, call 911 or your local emergency number immediately and use an epinephrine auto-injector if one has been prescribed.
Image note: The featured image on this page was created with AI and is for illustration only.