How does otitis media differ from external otitis?

Otitis media is an infection or inflammation of the middle ear, typically caused by bacteria or viruses, and often occurs following respiratory infections. In contrast, external otitis, commonly known as swimmer's ear, affects the outer ear canal and is usually caused by bacterial or fungal infections due to water exposure or skin irritation. While otitis media can lead to symptoms like ear pain, fever, and hearing loss, external otitis primarily presents with itching, redness, and discharge from the ear canal. The locations and causes of these conditions are key differences between them.