The causes of spitting gray-brown sputum after smoking include long-term smoke stimulation, respiratory diseases, and gastrointestinal bleeding.
1. Long-term smoke stimulation: most of the nicotine inside the cigarettes cause irritation to the mucous membrane of the throat, the emergence of chronic laryngitis caused by brown sputum.
2. Respiratory diseases: such as pneumonia, lung abscess, tuberculosis, lung tumors, etc. may lead to coughing up blood, coughing up sputum, resulting in gray-brown sputum.
3. Gastrointestinal bleeding: such as gastric ulcer, duodenal ulcer and other gastrointestinal bleeding, irritating vomit reflux into the pharynx, there will also be gray-brown sputum, not easy to distinguish.
Therefore, there are more reasons for spitting gray-brown sputum after smoking, and patients should consult the doctor in time for early treatment so as not to delay the condition and affect the prognosis.