Why Do I Keep Having Phlegm?

irritation of the nose, throat, or lungs. digestive conditions, such as gastroesophageal reflux disease. smoking tobacco products. lung diseases, such as pneumonia, lung cancer, cystic fibrosis, or chronic obstructive pulmonary disease.

Is it normal to have phlegm everyday?

Your body naturally makes mucus every day, and its presence isn't necessarily a sign of anything unhealthy. Mucus, also known as phlegm when it's produced by your respiratory system, lines the tissues of your body (such as your nose, mouth, throat, and lungs), and it helps protect you from infection.

Why do I keep getting phlegm in my throat?

The sinuses, throat, and nose all produce mucus that a person usually swallows unconsciously. When mucus starts to build up or trickle down the back of the throat, the medical name for this is postnasal drip. Causes of postnasal drip include infections, allergies, and acid reflux.