An ear infection, also known as otitis media, is a common condition that occurs when fluid builds up in the middle ear. This fluid can become infected with bacteria or viruses, leading to pain, fever, and hearing loss. Ear infections are most common in children, but they can also occur in adults.
There are a number of ways to check for an ear infection. One common method is to look for signs of inflammation, such as redness, swelling, or discharge from the ear. Another method is to use an otoscope, which is a lighted instrument that allows the doctor to see inside the ear. If there is fluid or pus behind the eardrum, this may be a sign of an ear infection.