In addition, swimming is the most significant risk factor for otitis externae, though other risk factors include high humidity in the ear canal, eczema and/or ear trauma.If red flags are present it may be necessary to do additional workup such as a CT scan or biopsy to rule out a more dangerous diagnosis. Such diagnoses include malignant (or necrotizing) otitis externa, mastoiditis, temporal arteritis, and cancer. It is important to note that while the presence of a red flag does raise suspicion for one of these four disease, it does not guarantee a diagnosis as any one symptom can be seen in a variety of situations. For example, jaw claudication can be seen in temporal arteritis, but also in TMJ dysfunction.If there are no red flags, other sources of referred ear pain become more likely and are reasonable to pursue. *Indicates a "Cant Miss" diagnosis or a red flag. Management
Management of ear pain depends on the underlying cause. Antibiotics
While not all causes of ear pain are treated with antibiotics, those caused by bacterial infections of the ear are usually treated with antibiotics known to cover the common bacterial organisms for that type of infection. Many bacterial ear infections are treated with cleaning of the area, topical or systemic antibiotics, and oral analgesics for comfort. Some types of bacterial ear infections can benefit from warm compresses included in the treatment. Some of the causes of ear pain that are typically treated with either a topical or systemic antibiotic include:

Uncomplicated acute bacterial otitis externa (AOE).
For symptoms that are not responsive to treatment within 10 days, a physician should evaluate for necrotizing external otitis. Acute otitis media (AOM) self-resolves within 24–48 hours in 80% of cases. If it does not self-resolve, AOM thought to be caused by bacteria is treated with systemic antibiotics. If symptoms do not respond to a week of treatment, a physician should evaluate for mastoiditis. Acute folliculitis. Auricular cellulitis. Suppurative otitis media. There is also a risk for tympanic membrane rupture. Perichondritis. An otorhinolaryngologist should also evaluate it and if a foreign body is present in the cartilage, this foreign body should be removed. If there is cartilage involvement, then more advance care with hospitalization is needed. Sinusitis can cause secondary ear pain. Treating the underlying sinusitis will treat the ear pain. (See sinusitis. )Some bacterial infections may require a more advanced treatment with evaluation by otorhinolaryngology, IV antibiotics, and hospital admission. Necrotizing external otitis is potentially fatal and should be evaluated by an otorhinolaryngologist with admission to the hospital and IV antibiotics. (See otitis externa.) Acute mastoiditis is treated with admission to the hospital, otorhinolaryngology consultation and empiric IV antibiotics. Cases with intracranial involvement are treated with a mastoidectomy with myringotomy. Chondritis. Procedures
Some causes of ear pain require procedural management alone, by a health professional, or in addition to antibiotic therapy. Keratosis obturans is treated with removal of impacted desquamated keratin debris in the ear canal. Chronic perichondritis and chondritis that continues to be symptomatic despite appropriate antibiotic management may require surgical debridement.