Your doctor will likely be able to make a diagnosis based on questions he or she asks and an examination of your ear with a lighted instrument (otoscope). Signs of airplane ear might include a slight outward or inward bulging of your eardrum. If your condition is more severe, your doctor may see a tear in the eardrum or a pooling of blood or other fluids behind your eardrum.
If you're experiencing a spinning sensation (vertigo), there may be damage to structures of your inner ear. Your doctor may suggest a hearing test (audiometry) to determine how well you detect sounds and whether the source of hearing problems is in the inner ear.