Mastoiditis Differential Diagnoses
- Author: PP Devan, MBBS, MS; Chief Editor: Arlen D Meyers, MD, MBA more...
Diagnostic Considerations
A high index of suspicion, judicious use of diagnostic modalities, and close follow-up care are recommended to make a diagnosis in a timely manner
Conditions to consider in the differential diagnosis of mastoiditis include the following:
- Basilar Skull Fracture
- Cellulitis
- Cysts
- Deep Neck Infections
- Lymphadenopathy
- Parotitis
- Stroke
- Trauma
- Tumors
- Histiocytoses
- Sarcoidosis
- External otitis
- Mastoid trauma
- Suppuration of postauricular lymph node
- Furuncle of meatus of the ear
- Suppuration of the postauricular (mastoid) lymph node - This node collects drainage from the scalp and becomes inflamed with infections involving this region
Catscratch disease and atypical mycobacteria tend to have poor response to antimicrobials and a high frequency of nodal abscess formation. Differentiation from acute surgical mastoiditis (ASM) is relatively easy with preservation of the skin crease and presence of a normal middle ear.
Lateral sinus thrombosis causes mastoid air sinus abnormalities; this is due to venous congestion as a consequence of this condition.
Differential Diagnoses
- Bell Palsy
- Otitis Externa
- Otitis Media
- Wegener Granulomatosis
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