Differential Diagnosis for Infected Ear
- Single most likely diagnosis
- Otitis media: This is the most common diagnosis for an infected ear, especially in children. It is an infection of the middle ear that can be caused by bacteria or viruses.
- Other Likely diagnoses
- Otitis externa: Also known as swimmer's ear, this is an infection of the outer ear canal. It is often caused by bacteria and can be painful.
- Mastoiditis: This is an infection of the mastoid bone, which is located behind the ear. It can be a complication of otitis media.
- Eustachian tube dysfunction: This can lead to middle ear infections and is often associated with allergies, colds, or sinus infections.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Meningitis: Although rare, meningitis can be a complication of otitis media or mastoiditis, especially if the infection spreads to the brain.
- Brain abscess: A rare but potentially life-threatening complication of otitis media or mastoiditis.
- Petrositis: Inflammation of the petrous portion of the temporal bone, which can be a complication of otitis media.
- Rare diagnoses
- Relapsing polychondritis: A rare autoimmune disorder that can cause inflammation and infection of the ear cartilage.
- Necrotizing otitis externa: A rare but serious infection of the outer ear canal that can be life-threatening in people with weakened immune systems.
- Otosyphilis: A rare complication of syphilis that can cause hearing loss and other ear problems.