Page 117 - Demo

Question 18: Otitis ExternaQ: Which of the following is a characteristic sign of otitis externa on otoscopy?%u2022 A) Bulging tympanic membrane%u2022 B) Air-fluid level behind the tympanic membrane%u2022 C) Erythema and edema of the external auditory canal%u2022 D) Retraction of the tympanic membraneAnswer: C) Erythema and edema of the external auditory canalExplanation: Otitis externa is characterized by inflammation of the external auditory canal. On otoscopy, you typically see erythema and edema of the canal. The other options are more characteristic of middle ear conditions.