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Information, symptoms, causes and diagnosis.

About

Mastoiditis is a bacterial infection of the mastoid bone, located just behind the ear. This condition typically arises as a complication of untreated or inadequately treated middle ear infections (otitis media), where the infection spreads from the middle ear to the mastoid air cells. The mastoid bone contains air cells that help drain the middle ear; when these become infected, it can lead to mastoiditis.

Symptoms

Ear Pain: Persistent or severe pain in or behind the ear.​
Swelling: Redness and swelling behind the ear, which may cause the ear to protrude.​
Fever: Elevated body temperature indicating infection.​
Hearing Loss: Decreased hearing in the affected ear.​
Drainage: Pus draining from the ear canal.

Causes

Bacterial Infection: Common bacteria such as Streptococcus pneumoniae, Streptococcus pyogenes, Staphylococcus aureus, Haemophilus influenzae, and Moraxella catarrhalis can cause mastoiditis.
Untreated Otitis Media: Infections that spread from the middle ear to the mastoid bone.​
Cholesteatoma: An abnormal skin growth in the middle ear that can lead to mastoiditis.

Diagnosis

Physical Examination: Assessment of symptoms such as ear pain, swelling, and drainage.​
Imaging Studies: CT scans or MRI to evaluate the extent of the infection.​
Laboratory Tests: Blood cultures to identify the causative bacteria.

Treatment & Prevention

Antibiotics: Intravenous antibiotics to combat the infection, followed by oral antibiotics. ​
Surgical Intervention: Procedures such as myringotomy (incision of the eardrum) or mastoidectomy (removal of infected mastoid bone) to drain infected material.​
Pain Management: Analgesics to alleviate pain and reduce fever.

Frequently Asked Questions

How is mastoiditis treated?
Treatment involves antibiotics to clear the infection and may require surgery to drain infected areas if antibiotics are insufficient.
Yes, mastoiditis can lead to hearing loss due to the involvement of the middle ear structures.
Mastoiditis itself is not contagious, but the ear infections that lead to it can be.
Untreated mastoiditis can lead to serious complications, including hearing loss, meningitis, and abscess formation.
Prompt treatment of ear infections and completing prescribed antibiotic courses can help prevent mastoiditis.

Disclaimer

This website provides general information on ear health and hearing loss for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for concerns about your hearing or ear health. We do not offer medical services, and reliance on this content is at your own risk. In case of a medical emergency, seek immediate medical attention.