Redness of the tympanic membrane and redness behind the ear are most often seen in patients with intracranial venous sinus occlusive cranial hypertension, most patients have perforated tympanic membrane with pus, and some patients have redness of the tympanic membrane and redness behind the ear. Intracranial venous sinus and venous thrombosis is the main cause of cerebral venous return and impaired cerebrospinal fluid absorption, which results in cranial hypertension, a specific type of cranial hypertension called venous sinus occlusive cranial hypertension. The following diseases may also cause redness of the tympanic membrane and redness behind the ear: 1. Ear boils Ear boils (er jie) are boils that occur in the external ear canal and are characterized by ear pain, limited redness and swelling of the external ear canal, and protrusion like pepper eyes. In ancient medical texts, there are still aliases such as “ear boils” and “black boils”, for example, “The Complete Book of Surgery – Volume 2” says: “Ear boils are born in the hidden places of the ear orifice, black in color and shape like pepper eyes, painful like cone pricks, leading to the cheek and brain, breaking and bleeding. “. The “external ear canal boils” in Western medicine can be treated with reference to this disease. Ear boils are boils that occur in the external ear canal and are characterized by limited redness and swelling and protrusion like a pepper eye. It is equivalent to the external ear canal boil in Western medicine. Ear sores Ear sores are diffuse red sores in the external ear canal, characterized by diffuse redness, swelling, ulceration and oozing of the external ear canal. It is equivalent to the diffuse otitis externa in Western medicine. 4. Acute suppurative otitis media Bacteria enter the tympanic choke and cause purulent infection, called acute suppurative otitis media, mostly secondary to upper respiratory tract infection. Commonly, they are Streptococcus haemolyticus, Staphylococcus aureus, type III pneumococcus and Proteus mirabilis. Most often seen in winter and spring, with blood disease, malnutrition, allergic reactions and heart and lung disease patients, nephritis, diabetes is easy to induce. According to statistics, the incidence rate of school-age children aged 5 to 16 years is as high as 3%, and up to 5% to 10% for those under 5 years old, and sometimes it can recur many times. The incidence of Eskimos and American Indians is much higher than that of whites, whether this is due to racial genetics or living conditions has not been determined.