Bronchitis - Symptoms and causes - Mayo Clinic
网页2024年7月31日 · Bronchitis is an inflammation of the lining of your bronchial tubes. These tubes carry air to and from your lungs. People who have bronchitis often cough up thickened mucus, which can be discolored. Bronchitis may start suddenly and be short term (acute) or start gradually and become long term (chronic).
Chronic cough - Symptoms and causes - Mayo Clinic
网页2019年7月9日 · COPD, a chronic inflammatory lung disease that causes obstructed airflow from the lungs, includes chronic bronchitis and emphysema. Chronic bronchitis can cause a cough that brings up colored sputum. Emphysema causes shortness of breath and damages the air sacs in the lungs (alveoli).
Pneumonitis - Symptoms and causes - Mayo Clinic
网页2024年7月30日 · Pneumonitis happens when an irritating substance causes inflammation in the tiny air sacs called alveoli in your lungs. Inflamed lung tissue makes it hard for oxygen to pass through the alveoli into the bloodstream. Many …
Pneumonia - Symptoms and causes - Mayo Clinic
网页2020年6月13日 · Pneumonia is an infection that inflames the air sacs in one or both lungs. The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.
Cough - Mayo Clinic
网页2020年6月13日 · A cough that persists for several weeks or one that brings up discolored or bloody mucus may indicate a condition that needs medical attention. At times, coughing can be very forceful. Prolonged, vigorous coughing …
Cough Causes - Mayo Clinic
网页2020年6月13日 · While an occasional cough is normal, a cough that persists may be a sign of a medical problem. A cough is considered "acute" if it lasts less than three weeks. It is considered "chronic" if it lasts longer than eight weeks (four weeks in children). Some causes of coughs include:
Pulmonary edema - Symptoms & causes - Mayo Clinic
网页2022年5月27日 · Pulmonary edema is a condition caused by too much fluid in the lungs. This fluid collects in the many air sacs in the lungs, making it difficult to breathe. In most cases, heart problems cause pulmonary edema. But fluid can collect in …
Bronchitis - Diagnosis and treatment - Mayo Clinic
网页2024年7月31日 · Sputum is the mucus that you cough up from your lungs. It can be tested to see if you have illnesses that could be helped by antibiotics. Sputum can also be tested for signs of allergies.
Lung cancer - Symptoms and causes - Mayo Clinic
网页2024年4月30日 · Lung cancer typically doesn't cause symptoms early on. Symptoms of lung cancer usually happen when the disease is advanced. Signs and symptoms of lung cancer that happen in and around the lungs may include: A new cough that doesn't go away. Chest pain. Coughing up blood, even a small amount. Hoarseness. Shortness of …
Chronic cough - Diagnosis and treatment - Mayo Clinic
网页2019年7月9日 · Although a routine chest X-ray won't reveal the most common reasons for a cough — postnasal drip, acid reflux or asthma — it may be used to check for lung cancer, pneumonia and other lung diseases. An X-ray of your sinuses may reveal evidence of a sinus infection. Computerized tomography (CT) scans.