Third-degree enlargement of the tonsils can lead to narrowing of the pharyngeal cavity, blockage of breathing during sleep, sensation of foreign body obstruction during swallowing, and slurred speech. It can be caused by physiological and pathological factors. According to different causes to take different treatment methods, should be timely consultation. 1. Physiological third degree enlargement of tonsils: it is mostly seen in children, whose immune organs are developing vigorously, and the tonsils, as lymphatic organs, will be physiologically enlarged. You can adjust your lifestyle, take a light diet, avoid spicy and stimulating food, ensure enough sleep, and take proper exercise to enhance your physical fitness, which may subside with age. 2. Pathological tonsil enlargement of the third degree: mostly caused by repeated attacks of tonsillitis or tonsil tumor lesions, the third degree of enlargement can affect swallowing, breathing and voice, and seriously lead to breathlessness, can consider surgical treatment. If you have third-degree enlargement of the tonsils, it is recommended to consult a doctor in time to clarify the cause of the disease and treat it under the guidance of the doctor.