Facial Nerve Lesions

Question 1

If patient asked to smile and raise both eyebrows:

1- The whole left side is paralyzed SO……

Answer 1

He has left facial lower motor neuron lesion
(Paralysis of ipsilateral upper and lower facial musculature)
(Unable to raise eyebrow or smile on affected side)

Question 2

2- The Lower right side is paralyzed SO…….

Answer 2

Left facial upper motor neuron lesion
(Paralysis of contralateral Lower facial musculature)
(Unable to smile on affected side but can raise both eyebrows)