A patient presents with hyperacusis, loss of lacrimation and loss of taste sensation in the anterior 2/3rd of the tongue. Oedema extends up to which level of facial nerve -
Vertical part
Vertical part proximal to nerve to stapedius
Vertical part and beyond nerve to stapedius
Proximal to geniculate ganglion
The patient is presenting with : -


Hyperacusis: - Nerve to stapedius is involved.
Loss of taste sensation in anterior 2/3 of tongue → Chorda tympani is involved.
Loss of lacrimation → Greater superficial petrosal nerve is involved.


Thus, the lesion is at or proximal to geniculate ganglion.