system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which test can detect facial nerve palsy occurring due to lesion at the outlet of stylomastoid?
assistant
The correct answer is  Lesion occuring at the outlet of stylomastoid foramen means LMN palsy, so face sags and is drawn across to opposite side. Chorda tympani nerve is spared at this level hence taste sensation over anterior 2/3 of tongue preserved