Coughing up phlegm when you don’t have a cold could be due to a number of different conditions: a sinus infection, allergies with postnasal drip, pneumonia, smoking, asthma, heartburn, or even some medicines like angiotensin-converting enzyme (ACE) inhibitors for high blood pressure. If you've had a cough for more than two weeks, call your doctor.
- Q When should I go to the emergency room for a cough?
- Q Why are your lungs more like sponges than balloons?
- Q What does an aspirin-exacerbated respiratory disease (AERD) center do?
- Q How should I treat a dry cough?
- Q How do people with lung disease know they need oxygen?
- Q Why shouldn't I live too close to a freeway or major road?