Why Do I Still Cough After a Cold?
Why Do I Still Cough After a Cold?
When virus tests are negative, your body might be in one of these four states.
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Airway Hyper-reactivity
The virus is gone, but inflammation leaves nerve endings exposed and hypersensitive.
- • Triggers: Cold air, talking, or laughing
- • Sensation: Itchy throat, mostly dry cough
- • Advice: Wear a mask, avoid icy drinks
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Post-nasal Drip (UACS)
Lingering sinus inflammation causes mucus to drip down the back of the throat.
- • Triggers: Worsens when lying down or waking up
- • Sensation: Phlegm in throat, constant throat clearing
- • Advice: Elevate head at night, saline nasal rinse
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Acid Reflux (GERD)
Stomach acid irritates the esophagus and throat, triggering a cough reflex.
- • Triggers: After meals or when lying flat
- • Sensation: Heartburn or a sour/bitter taste
- • Advice: No food 3h before bed, limit caffeine
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Ciliary Dysfunction
Viruses damage "cilia" (tiny hairs) that clear waste from your airways.
- • Triggers: Persistent dry cough, localized irritation
- • Sensation: Prickling feeling in the throat
- • Advice: Stay hydrated, use a humidifier (50-60%)
⚠️ Red Flags: Seek medical attention if...
Duration
Lasts > 3-8 weeks
Sputum
Green/Bloody phlegm
Breathing
Wheezing/Chest pain
Others
Unexplained fever
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