Primary Secretory Otitis Media (PSOM) in Dogs
Primary Secretory Otitis Media (PSOM) is a medium-severity ear condition that can affect dogs of all ages and breeds. PSOM is a condition in Cavalier King Charles Spaniels characterised by accumulation of thick viscous mucus in the middle ear cavity without obvious external ear infection. It is thought to be related to dysfunction of the Eustachian tube and may co-occur with syringomyelia. It is documented across 1 breed, though prevalence and severity can differ significantly between them. It typically becomes apparent at 1-5 years. Early signs to watch for include head shaking and scratching at ear, pain on ear manipulation, signs of vestibular dysfunction, and phantom scratching (overlap with syringomyelia). When treatment is required, costs are estimated at £500-£2,000 depending on severity, location, and the specific intervention needed. Primary Secretory Otitis Media (PSOM) has a hereditary component, so health-screening certificates from the breeder are strongly recommended for predisposed breeds. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.
Signs & Symptoms
The following symptoms are commonly associated with Primary Secretory Otitis Media (PSOM) in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.
- Head shaking and scratching at ear
- Pain on ear manipulation
- Signs of vestibular dysfunction
- Phantom scratching (overlap with syringomyelia)
- Facial nerve dysfunction
Treatment Overview
Myringotomy (puncturing the eardrum) under anaesthesia to drain the mucous plug provides relief. Repeated procedures may be necessary. Anti-inflammatory treatment may reduce mucus production.
Typical onset: 1-5 years
Prevention & Screening
While not all cases of Primary Secretory Otitis Media (PSOM) can be prevented, the following steps reduce risk or enable earlier intervention:
- Regular ear examination and MRI of at-risk breeds
- Coordinate with syringomyelia screening
Estimated Treatment Cost
Treatment for Primary Secretory Otitis Media (PSOM) is estimated at £500-£2,000, depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering hereditary conditions is strongly recommended.
Breeds Affected by Primary Secretory Otitis Media (PSOM)
The following 1 breed are documented as being susceptible to Primary Secretory Otitis Media (PSOM). Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.
Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.