During an examination, the doctor will use an instrument called a otoscope to assess the ear’s condition. With it, the doctor will perform an examination to check for redness in the ear and/or fluid behind the eardrum. With the gentle use of air pressure, the doctor can also see if the eardrum moves. If the eardrum doesn’t move and/or is red, an ear infection is probably present.

Two other tests may be performed for more information. An audiogram tests if hearing loss has occurred by presenting tones at various pitches. A tympanogram measures the air pressure in the middle ear to see how well the eustachian tube is working and how well the eardrum can move.