There are many reasons why sputum is white and thick with foam, and the common reasons are stimulation by physical and chemical factors, chronic left heart failure, chronic bronchitis and so on.
1. Stimulation of physical and chemical factors: stimulation of physical and chemical factors leads to an increase in secretions in the trachea, bronchus and pharynx, especially mucus gland secretions, secretions in the respiratory tract also increase, the respiratory tract protects itself and cleans itself, the gas passes through the secretion site, secretions and irritants are coughed up together, resulting in thick and foamy sputum.
2. Chronic left heart failure: it often occurs at night at the beginning of the cough can be reduced when sitting or standing, white plasma foamy sputum as its characteristics, occasionally see sputum with blood.
3. Chronic bronchitis: cough, cough sputum, sputum is white mucus foamy.
White sputum and thick foamy sputum may also have other reasons, such as alveolar cell carcinoma, etc., should be timely to the hospital respiratory internal medicine department to clarify the cause of the disease, under the guidance of a professional physician, and comply with the doctor’s instructions for targeted treatment, so as to avoid delaying the condition.