Itchy throat cough bleeding is generally a disease of the respiratory system, commonly found in the pharynx, bronchus, lung lesions. 1. Pharynx:Pharynx problems are usually pharyngitis, laryngitis, etc. Inflammation of the pharynx can easily cause congestion of the mucous membrane, which leads to the patient to feel the throat itchy, and when coughing, the capillaries of the inflamed parts rupture, which leads to bleeding. 2. Bronchial:Bronchial disease is one of the diseases most likely to cause the above problems, common bronchial dilatation, chronic bronchitis and so on. Inflammation in the bronchial area can thin the walls of the bronchial mucosa and capillaries, which can lead to the symptom of bleeding when coughing. 3. Lungs: Problems in the lungs are generally more serious than the above two conditions and include pneumonia, lung abscess, and tuberculosis. When these diseases occur, the mucous membranes or capillaries in the lungs will become red, swollen, oozing blood or even ulcerated, and the patient will have an itchy throat, cough, and sputum with blood or small blood clots. It is recommended that the patient go to the relevant department of the hospital for a systematic examination before the diagnosis can be confirmed.