Acute Mastoiditis VS Furunculosis
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Acute Mastoiditis V/S Furunculosis
Furunculosis is a localized boil (furuncle) in the external auditory canal. The table compares typical findings; not every finding is present in every patient.
| Feature | Mastoiditis | Furunculosis |
|---|---|---|
| Preceding history | Otitis media | May follow ear canal trauma from self-cleaning; this history is not required |
| Discharge | Mucoid/ mucopurulent | Purulent, sometimes blood-stained |
| Pinna position | Outwards & downwards | Outwards & laterally |
| Postauricular groove | Obliterated | Preserved/accentuated |
| Tenderness | Mastoid process & cymba concha | Tragal tenderness |
| EAC findings | Posterior superior canal wall sagging | Red, tender furuncle |
| Tympanic membrane | Inflamed/ perforated/ bulging | Usually normal if visible; canal swelling or debris may obscure the view |
| Mastoid | Ironed-out appearance | Normal |
| Hearing loss | Conductive | None or mild conductive |
| Fever/systemic signs | May be present | Usually absent in localized disease |
| Lymph nodes | May be enlarged & tender | Usually not enlarged in localized disease |
For clinical features, investigations and treatment, see our mastoiditis notes.
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