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  1. Bronchitis - Symptoms and causes - Mayo Clinic

    Jul 31, 2024 · Chronic bronchitis is typically defined as a productive cough that lasts at least three months, with bouts that recur for at least two consecutive years. If you have chronic bronchitis, you're …

  2. Bronchitis - Diagnosis and treatment - Mayo Clinic

    Jul 31, 2024 · The lining of the tubes that carry air to and from your lungs is inflamed. Signs and symptoms include cough, mucus, fatigue and chest discomfort.

  3. COPD - Symptoms and causes - Mayo Clinic

    Aug 30, 2024 · The most common cause is cigarette smoke. Emphysema and chronic bronchitis are the two most common types of COPD. These two conditions usually occur together and can vary in …

  4. Emphysema - Symptoms and causes - Mayo Clinic

    Nov 19, 2024 · In chronic bronchitis, the lining of the tubes that carry air to your lungs, called bronchial tubes, become irritated and swollen. This inflammation limits the space for air to move in and out of …

  5. Chronic Bronchitis Involves Cough that Persists for Years and Produces ...

    Apr 15, 2011 · Chronic bronchitis is defined by how long a person has a cough with daily phlegm production. It involves a frequent cough that persists for more than two years and, for at least three …

  6. Acute bronchitis: Is it contagious? - Mayo Clinic

    Jan 24, 2025 · Chronic means the symptoms are always present. People with chronic bronchitis also can have flare-ups of acute bronchitis and get worse for a period of time. Chronic bronchitis is …

  7. COPD - Diagnosis and treatment - Mayo Clinic

    Aug 30, 2024 · To diagnose your condition, your healthcare professional reviews your symptoms and asks about your family and medical history and any exposure you've had to lung irritants — …

  8. Chronic obstructive pulmonary disease: Risks, symptoms and prevention

    Nov 29, 2016 · Chronic obstructive pulmonary disease, or COPD, is a collection of serious lung diseases that obstructs airflow from the lungs and causes breathing issues. Emphysema and chronic …

  9. Chronic cough - Symptoms and causes - Mayo Clinic

    Oct 29, 2024 · Chronic bronchitis can cause a cough that brings up colored sputum. Emphysema causes shortness of breath and damages the air sacs in the lungs, also known as alveoli.

  10. Asthma - Symptoms and causes - Mayo Clinic

    Mar 8, 2025 · Asthma can't be cured, but its symptoms can be controlled. Because asthma often changes over time, it's important that you work with your doctor to track your signs and symptoms …