You know the cough that lingers even after your cold’s gone? What’s that about?

Cough drop blister packets in orange and yellow

This article may feature affiliate links, and purchases made may earn us a commission at no extra cost to you. Find out more here.

Weeks after a cold is gone, you’re still stuck with a bad cough. What gives? Is there any way you can prevent that cough — or at least get rid of it sooner?

You’re not the only one who has suffered from a cough that lingers for weeks. Here’s a look at why that might be happening.
Sometimes it feels like the symptoms of a cold will never go away.

Often in clinical practice, we will tell patients to come to the clinic to get examined if their symptoms are not improving after one week to 10 days. In many cases, patients do feel that their symptoms are improved within that time period, but not completely resolved. Often, one of the last symptoms to go away is the cough.

It is important to distinguish between a lingering cough from a prior viral infection, and a new cough that could be more serious.

The common cold can be caused by one of many viruses, and so a person’s symptoms may vary. Some people may not have a cough at all, or may first develop a cough near the end of the illness.

Usually, when the cough lingers, it is related to “post-nasal drip.” After a cold, the body is still trying to clear some of the mucous from your nasal passages. When this mucous drips down the back of your throat from your nose and sinuses, it often triggers a cough.

Woman coughing in a grocery store
Photo by Prostock-studio/Envato
Dealing with post-nasal drip

It is often difficult to prevent post-nasal drip. Preventing the cold in the first place is the best way to prevent it — however, this is often impossible given the frequent contact we have with others.

The next best way is to try to get the mucous to run out of your nose rather than back to your throat.

Using a neti pot, or a saline sinus rinse, helps to thin the mucous, and allow it to drain out the front of the nose. Blowing your nose after this helps to clear more mucous out. Some people notice that over-the-counter decongestants also help to thin the mucous, and allow for better drainage.

If the cough is waking you from sleep, or severely disrupting your work, call your primary care provider for further discussion of cough suppressant options.

Typically a cough associated with a cold will subside within one month. You should notice that it is slowly improving over time. If you notice that it is not decreasing, you may have other reasons for coughing.

One common cause of cough is “heartburn” or gastric reflux. This sometimes can cause a sour or bitter taste in the back of your mouth, and can induce coughing. Also, if you notice any wheezing, or decreased tolerance of activity, you could have symptoms of asthma.

Finally, if you are a smoker with a chronic cough, or if your cough has blood, you should be seen.

Jacqueline Gerhart, MD

Jacqueline Gerhart, MD

Dr. Gerhart is a Wisconsin native and completed undergraduate degrees in Biomedical Engineering and Neuroscience at UW-Madison. Her special interests include women's health, sports medicine, mental health and minor surgical procedures. Dr. Gerhart is currently practicing full-spectrum family medicine, including maternity and inpatient care. Note: This is general health information and is not specific advice intended for any particular individual(s). It is not a professional medical opinion or a diagnosis. Always consult your personal healthcare provider about your concerns.

don't miss