Many people think that ear pus is not a big problem, so they should just order some drops and take some medication, and their understanding of this disease has gone into a misunderstanding. Ear pus is a symptom of ear inflammation, along with burning, itching, pain, diffuse congestion and swelling of the ear canal, which is not to be underestimated and can cause intracranial and extracranial complications in severe cases. What are the causes of ear pus? Here are the causes of ear pus: There are many causative factors for ear pus, which may be a kind of ear inflammation caused by otitis externa, otitis media and other ear diseases, or ear digging or foreign body injury, drug stimulation, pus from purulent otitis media or water impregnation from swimming or bathing, which can trigger ear pus. If the symptoms of ear inflammation and pus are present, then the first task is to diagnose the causative factors and then treat them. Ear pus can be very dangerous and can have a serious impact on normal life, school and work. Delayed treatment can also lead to a variety of complications. Therefore, if you have pus in your ears, you should go to a professional hospital as soon as possible to check the cause of the problem and get timely and effective treatment.