It is not unusual to cough up phlegm with a common cold. However, it can also indicate a different, sometimes serious, underlying condition such as stomach acid reflux, lung disease, or heart disease.

If you’re blowing your nose regularly, it’s hard not to notice your mucus—and what color it is. So it can also be alarming if you happen to spot yellow, brown, bloody, or green mucus in your used ...

If you have ulcerative colitis, you might see blood and mucus in your poop when you have a flare-up. It shows up most often in very loose, watery stools. This bloody diarrhea tends to happen with ...

Bronchitis may cause you to cough up blood, known as hemoptysis. Bronchitis is inflammation of the bronchial tubes, or airways, that usually happens due to an infection or breathing in irritants like ...

Mucus isn't exactly something people give much thought to — until they're sick and dealing with a constantly runny nose. But mucus is actually an important part of a healthy immune system, according ...

WASHINGTON -- Patients with severe, uncontrolled asthma taking tezepelumab (Tezspire) reported significantly improved cough and phlegm production, compared with patients taking placebo, in a secondary ...