You’ve recovered from a cold, the flu, or another respiratory infection, but the cough just won’t go away. If you’re otherwise feeling better but still coughing weeks later, you may be dealing with a post-infectious cough. This type of lingering cough is common and can be frustrating, especially when it disrupts sleep or daily activities. Understanding how long it typically lasts, and when it may signal something more serious, can help guide your next steps.
For same-day cough treatment, visit the walk-in clinic at AFC Urgent Care Denver Park Hill. Our team is available 7 days a week to diagnose and treat your condition with no appointment necessary. If you'd like to plan your visit in advance, simply book below.
What is a Post-Infectious Cough?
A post-infectious cough is a cough that continues after the initial illness has resolved. It most often follows:
- The common cold
- Influenza
- COVID-19
- Bronchitis
- RSV or other viral respiratory infections
Even though the infection has cleared, inflammation and irritation in the airways can linger, triggering persistent coughing.
How Long Does a Post-Infectious Cough Usually Last?
A post-infectious cough typically lasts 3 to 8 weeks after the original illness. Less than 3 weeks is considered an acute cough, whereas 3 to 8 weeks is classified as subacute (post-infectious). If the cough lasts more than 8 weeks, this is considered chronic and may require further evaluation.
Most post-infectious coughs are dry or minimally productive. You may notice a tickling sensation in the throat, coughing fits at night, worsening cough with exercise, or increased coughing in cold air. If mucus is present, it is usually clear or light-colored.
Why Does the Cough Linger?
After a respiratory infection, the airways can remain inflamed and overly sensitive. This heightened sensitivity means even small irritants, like cold air, talking, or light exercise, can trigger coughing.
Other contributing factors may include:
- Residual mucus production
- Temporary airway hyperreactivity (similar to mild asthma)
- Post-nasal drip
- Throat irritation from repeated coughing
Even though you’re no longer contagious, the cough reflex may remain activated while your airways heal.
When It Could Be Something Else
While lingering cough after illness is common, certain signs suggest further evaluation is needed. These symptoms include:
- Fever returning after improvement
- Shortness of breath
- Chest pain
- Wheezing
- Coughing up blood
- Symptoms lasting longer than 8 weeks
In some cases, what seems like a post-infectious cough may actually be undiagnosed asthma, pneumonia, reflux, or chronic sinus issues. Treatment depends on the severity and cause. In many cases, a post-infectious cough can be relieved with supportive care. If airway inflammation is significant, a healthcare provider may recommend inhalers or other medications to reduce irritation.
When to Visit Urgent Care
Consider visiting an urgent care center if:
- The cough is interfering with sleep or daily life
- Symptoms worsen instead of improve
- You develop new chest tightness or wheezing
- You’re unsure whether the infection has fully cleared
Urgent care providers can evaluate lung sounds, check oxygen levels, and determine whether further testing or treatment is needed.
Same-Day Post-Infectious Cough Relief Available at AFC Urgent Care Denver Park Hill
A post-infectious cough typically lasts between 3 and 8 weeks after a respiratory illness. While it can be frustrating, it often improves gradually as airway inflammation resolves. However, if symptoms persist beyond 2 months or worsen at any point, medical evaluation is important to rule out other causes. If you’re concerned about a lingering cough, come visit the walk-in clinic at AFC Urgent Care Denver Park Hill. Our team can help determine the next best steps for recovery. We provide fast testing, effective treatment, and relief that lasts. We accept most health insurance plans and offer low-cost options for self-paying patients. If you have any additional questions about the services we provide, please contact our team directly at (303) 639-1000.
