What Otoscopic examination finding helps the nurse to identify mastoiditis in a patient with ear pain?

-Red, dull, thick, and immobile eardrum with perforations

Rationale
The presence of a red, dull, thick, and immobile eardrum with perforations is usually observed in mastoiditis. Red, visible pulsations of a mass extending to the external ear canal are seen in tumors of the middle ear. In the third stage of otitis media, a red, thickened, and bulging eardrum with loss of landmarks is observed. In the initial stages of otitis media, otoscopic examination reveals a retracted eardrum with clear landmarks.
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They decrease endolymph volume.

Rationale
Mild diuretics decrease endolymph volume, which reduces the vertigo, hearing loss, tinnitus, and aural fullness associated with Ménière's disease. Antiemetics, not diuretics, are used to reduce nausea and vomiting symptoms. Nicotinic acid, not diuretics, has been found to be useful in Ménière's disease because of its vasodilatory effect. Benzodiazepines, not diuretics, can be used to calm the patient during an attack.
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Which Otoscopic finding would the nurse observe in a patient who has an ear infection with effusion?

Which common manifestation is present in a patient with mastoiditis?

Which assessment finding is usually noted in a patient with external otitis?