Types
Stage of Tubal occlusion
- Oedema and hyperaemia of nasopharyngeal end of Eustachian tube blocks the tube leading to absorption of air and negative intratympanic pressure
- Symptoms: Deafness and earache
- Signs: Tympanic membrane is retracted with the handle of malleus assuming a more horizontal position, Loss of light reflex
Stage of Pre suppuration
- If the tubal occlusion is prolonged, pyogenic organisms invade the tympanic cavity, causing hyperaemia of its lining
- Symptoms: Marked earache, High degree of fever
- Signs:Cart-wheel appearance of the tympanic membrane
Stage of Suppuration
- This is marked by the formation of pus in the middle ear
- Symptoms: Earache becomes excruciating, Deafness increases, Fever ( 102–103°F)
- Signs: A yellow spot may be seen on the tympanic membrane where rupture is imminent, Tenderness may be elicited over the mastoid antrum
Stage of Resolution
- The tympanic membrane ruptures with the release of pus and subsidence of symptoms
- Symptoms: With the evacuation of pus, earache is relieved and fever comes down
- Signs: Usually, a small perforation is seen in the antero -inferior quadrant of Pars Tensa
Stage of complication
If resolution may not take place It may lead to
- Acute mastoiditis
- Subperiosteal abscess
- Facial paralysis
- Labyrinthitis
- Petrositis
- Extradural abscess
- Meningitis
- Brain abscess
- Lateral sinus thrombophlebitis