Symptoms of Chronic Suppurative Otitis Media
The cardinal symptom of chronic suppurative otitis media (CSOM) is persistent ear discharge (otorrhoea) through a perforated tympanic membrane, accompanied by hearing loss. 1
Primary Clinical Features
Ear Discharge (Otorrhoea)
- Persistent drainage from the ear is the defining symptom
- Discharge continues for more than 2 weeks (though diagnostic criteria vary from 2 weeks to at least 3 months) 1
- The discharge occurs through a non-intact tympanic membrane (either perforation or ventilation tube) 1
Hearing Loss
- Conductive hearing loss is a predominant symptom 1, 2, 3
- Results from chronic inflammation of the middle ear and mastoid mucosa 1
- The hearing impairment can have significant developmental consequences, particularly in children 4
Key Diagnostic Distinctions
What CSOM is NOT:
- Unlike acute otitis media (AOM), CSOM does not present with rapid onset of acute ear pain, fever, or bulging tympanic membrane 1
- Unlike otitis media with effusion (OME), CSOM involves a perforated tympanic membrane with active discharge, not fluid behind an intact membrane 1
Additional Clinical Considerations
Chronic Inflammation Pattern
- CSOM represents chronic inflammation of both the middle ear and mastoid mucosa 1
- The condition is often polymicrobial in nature 2, 3, 5
- Bacterial biofilms may be present, protecting bacteria against treatment 1
Important Clinical Pitfall: Do not confuse CSOM with acute suppurative otitis media or chronic OME. The presence of both a non-intact tympanic membrane and persistent ear discharge distinguishes CSOM from these other conditions 1.
Global Health Impact: In developing countries, CSOM is a leading cause of hearing loss, with an estimated global prevalence of hearing loss associated with OM at 30 per 10,000 individuals 1. The condition carries significant morbidity, particularly regarding permanent hearing impairment and its effects on language development and quality of life 6.