Why Is My Cold Lasting Over 20 Days? Prolonged Symptoms - Internal Medicine

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Cold not yet healed?


I have had a cold for over 20 days and have seen two or three doctors who all diagnosed it as a cold.
I have been taking my medication as prescribed, but I am still not better.
An X-ray of my lungs showed no issues.
I have a mild cough and a sore throat, and recently my lips have been cracking for no reason, with a little bleeding.
Could you please explain why this has been dragging on for so long?

Jia Nüshi, 30~39 year old female. Ask Date: 2021/02/28

Dr. Hong Yuanbin reply Internal Medicine


Hello, based on your description, it seems that your concern may be a persistent cough.
Some individuals do experience bronchitis as a complication after a cold, which can lead to a prolonged cough.
Additionally, the recent poor air quality can further trigger coughing.
I recommend wearing a mask when going outside.
If your X-ray results are normal, you can manage the symptoms with throat lozenges or other throat care medications.
Improving the throat inflammation should also help alleviate the cough.
Thank you for your inquiry.

Reply Date: 2021/02/28

More Info


When a cold lasts for more than 20 days, it can be concerning and frustrating. While the common cold typically resolves within 7 to 10 days, prolonged symptoms may indicate several underlying issues that require further investigation. Here are some potential reasons why your cold symptoms have persisted for such an extended period:
1. Viral Infection: The common cold is caused by various viruses, primarily rhinoviruses. Sometimes, a viral infection can linger longer than usual, especially if your immune system is compromised or if you are exposed to additional viral strains.

2. Secondary Infections: Prolonged cold symptoms can sometimes lead to secondary bacterial infections, such as sinusitis or bronchitis. These infections can cause symptoms like persistent cough, throat pain, and nasal congestion that may not improve with typical cold treatments. If you have been experiencing a worsening cough or increased mucus production, this could be a sign of a secondary infection.

3. Allergies or Environmental Factors: Allergies can mimic cold symptoms and may be exacerbated by environmental factors such as dust, pollen, or pet dander. If you have a history of allergies, it’s possible that your symptoms are being prolonged by an allergic reaction rather than a viral infection.

4. Chronic Conditions: Conditions such as asthma, chronic obstructive pulmonary disease (COPD), or other respiratory issues can lead to prolonged symptoms that resemble a cold. If you have a history of respiratory issues, it may be worth discussing with your healthcare provider.

5. Immune System Function: If your immune system is weakened due to stress, lack of sleep, poor nutrition, or other health conditions, it may take longer for your body to fight off infections. This can lead to prolonged symptoms.

6. Other Underlying Conditions: Sometimes, prolonged symptoms can be a sign of other underlying health issues, such as autoimmune disorders or other chronic infections. If your symptoms persist despite treatment, further evaluation may be necessary.

Given your symptoms of a lingering cough, throat pain, and the recent development of a bleeding lip, it is crucial to follow up with your healthcare provider. They may recommend additional tests, such as blood tests or a referral to a specialist, to rule out any underlying conditions that could be contributing to your prolonged symptoms.

In the meantime, here are some general recommendations to help manage your symptoms:
- Stay Hydrated: Drink plenty of fluids to help thin mucus and keep your throat moist.

- Rest: Ensure you are getting adequate rest to support your immune system.

- Humidify Your Environment: Using a humidifier can help ease throat irritation and congestion.

- Over-the-Counter Medications: Consider using over-the-counter medications to alleviate specific symptoms, such as pain relievers for throat pain or cough suppressants for a persistent cough.

- Avoid Irritants: Stay away from smoke, strong odors, and other irritants that can exacerbate your symptoms.

If your symptoms do not improve or worsen, it is essential to seek medical attention promptly. Your healthcare provider can help determine the best course of action and ensure that any underlying issues are addressed appropriately.

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