The area of audiology provides testing for diagnosing the grade and type of hearing loss patients may have, such as:

Tympanometry (Tympanogram) or Impedanciometry, Otoacoustic Emissions, Pure-Tone Audiometry, Auditive Evoked Potentials, Electronystagmography (ENG), Electrococleography, Posturography and Vestibular Rehabilitation. 

Some of the diseases often diagnosed with the before-mentioned studies are:

• Serosal middle ear otitis
• Cholesteatomas
• Otosclerosis
• Sudden hypoacusia
• Eighth cranial nerve tumors