Coughing up phlegm after eating can be a sign that the act of eating is irritating or triggering something in the digestive system. Possible causes include food allergies, aspiration, or GERD. Phlegm ...
Q: Over the years I have been bothered by coughing up phlegm from the back of my throat many times a day. One doctor told me it is not infected because the phlegm is white, but didn't really help me ...