How to differentiate between otitis media and otitis media in the absence of specialized equipment. In general, whether it is otitis media or otitis media, the basic symptoms are ear pain, discharge, and even hearing loss. However, in addition to the common symptoms, there are also many differences in terms of etiology, symptoms and signs, which can be distinguished in the following aspects. I. Pathogenesis of otitis externa Purulent otitis media is mostly caused by water in the ear canal, ear pulling Mostly caused by wind, cold, rhinitis sinusitis nasal smoke trauma, or diabetes, ear infection Department of swelling caused by drug irritation, etc. II. Pain site, nature. Ear deep pain, pulling the ear, pressure on the ear screen general pain does not intensify ear canal pain, pulling the ear, pressure on the ear screen pain intensifies III. Differences in secretions Mostly purulent, or mucus more dilute watery or dilute pus, accompanied by boils can have thick plugs IV. Impact on hearing Obviously affects hearing affects little, unless the ear canal is filled with pus or earwax V. Prognosis Can lead to perforation of the eardrum, chronic otitis media, serious general does not leave sequelae when. It can be complicated by mastoiditis, even encephalitis, meningitis and brain abscess. Therefore, if you have ear pain and discharge, you should consult a doctor early to make a clear diagnosis so that you can treat the disease and ensure your health.