7-year-old with Ear Pain II

A 7-year-old girl is brought to the emergency department (ED) with one day of severe right ear pain. She has a history of prior ear infections, but her mother reports that the pain with this episode is significantly worse than with previous infections. Alternating doses of ibuprofen and acetaminophen have provided little relief. On examination, the child is afebrile but appears markedly uncomfortable. She is crying, rocking on the gurney, and holding her right ear. Otoscopy with the Wispr Digital Otoscope demonstrates the abnormality shown in image.

Which of the following statements regarding this child's diagnosis and management is most accurate?

A. Bullous myringitis is primarily caused by Mycoplasma pneumoniae and should be treated with a macrolide antibiotic.
B. Bullous myringitis is a form of otitis externa characterized by vesicles of the external auditory canal and should be treated with topical antibiotics.
C. Bullous myringitis is characterized by bullae involving the tympanic membrane, is generally considered part of the acute otitis media spectrum, and should be managed with analgesia and treatment of the underlying AOM when indicated.
D. The presence of bullae on the tympanic membrane always indicates a viral infection; therefore, antibiotics are contraindicated.

Bullous myringitis is characterized by bullae involving the tympanic membrane, is generally considered part of the acute otitis media spectrum and should be managed with analgesia and treatment of the underlying AOM when indicated.

This child has bullous myringitis, characterized by the presence of one or more fluid-filled bullae on the bulging tympanic membrane (TM).  The appearance can be dramatic and is often associated with significant otalgia, as illustrated by this child's marked discomfort.

Bullous myringitis is best understood as part of the spectrum of acute otitis media (AOM) rather than as a separate infection requiring a unique antimicrobial regimen. Historically, bullous myringitis was thought to have a strong association with Mycoplasma pneumoniae. Subsequent evidence, however, has not supported Mycoplasma as the predominant cause. The same bacterial and viral pathogens associated with conventional AOM may be responsible.

The presence of bullae does not by itself establish a particular microbial etiology and does not justify selecting an antibiotic specifically for Mycoplasma. When findings are otherwise consistent with AOM (including bulging as demonstrated in this case), antibiotic selection should follow standard AOM treatment recommendations.

Pain control is particularly important. Bullous myringitis may cause severe pain, and systemic analgesics such as acetaminophen and ibuprofen should be used when appropriate. In selected patients with an intact tympanic membrane, a topical anesthetic may provide additional rapid pain relief.

WiscMed has created a visual diagnosis guide to ear conditions that may be found here. Note that there is an option to download a convenient pdf of the guide.

Key Learning Points

• Bullae on the tympanic membrane are the hallmark otoscopic finding of bullous myringitis.
• Bullous myringitis can produce disproportionately severe otalgia and adequate analgesia is an important component of treatment.
• It is generally considered part of the acute otitis media spectrum.
• The historical association with Mycoplasma pneumoniae has not been supported by subsequent evidence.
• Antibiotic therapy, when indicated, follows standard AOM treatment recommendations rather than requiring routine macrolide therapy.

Reference: Mellick LB, Verma N. The Mycoplasma pneumoniae and bullous myringitis myth. Pediatr Emerg Care. 2010 Dec;26(12):966-8. doi: 10.1097/PEC.0b013e3181fe9298. PMID: 21131817.