No coughing, spitting, blood.

There is blood in sputum but no obvious cough symptoms. It is considered that excessive force may be exerted during throat clearing, resulting in damage to throat mucosa and bleeding. If there is discomfort such as sweating, chest distress and fever at night, it may be caused by tuberculosis, pneumonia, bronchiectasis and other diseases. Chest X-ray examination can be further improved to confirm diagnosis.