There are several ways to self-test for otitis media: First, pain: see if the pain is a little inside or a little outside. Pain near the inside is relatively more likely to be otitis media. Second, knead or pull the auricle when in pain: when you feel pain in the ear, you can do a little pulling and kneading of the auricle. If the ear cannot be pulled or kneaded, and if it feels painful when it is slightly pulled or kneaded, the probability of otitis media is low, and there is a high probability of having otitis externa or inflammation of the ear. Although the ear hurts, but kneading and pulling does not hurt much, so the possibility of otitis media is higher. Third, whether the ears are stuffy with blistering sensation: There is a kind of otitis media called secretory otitis media, which is not accompanied by painful symptoms. The manifestation of secretory otitis media is that the ears will suddenly feel stuffy and cannot hear clearly, and some patients may even feel the sound of gurgling blisters in their ears. Fourth, whether the ear is overflowing: there is a more common type of otitis media called purulent otitis media. When the ear keeps flowing yellow water outward and there is overflow, it is more likely to be purulent otitis media. Therefore, to check for otitis media, first, look at the painful area inside or outside. Second, does it hurt to knead or pull on the auricle when it hurts? Then, see if there is any sudden stuffiness in the ear and a feeling of blisters inside. Finally, see if there is any outward flow of water from the ear, a yellowish fluid. If you have any of these conditions, you should highly suspect otitis media. If you want to confirm the diagnosis, you should ask an ENT doctor to do an examination with an otoscope, so that you can distinguish whether it is otitis media and what kind of otitis media it is, and make the appropriate symptomatic treatment.