The nervus intermedius, also known as Wrisberg's nerve or Sapolini's nerve[^1], transmits both parasympathetic and sensory information.
Anatomy
The anatomy of the nervus intermedius is highly variable, and in approximately 56 % of cases, the nerve courses as a single bundle, while in the remaining 44 % of cases it consists of multiple nerve bundles [^3].
Course
The nervus intermedius emerges from the brain at the Cerebellopontine angle and courses between the Facial nerve and the Vestibulocochlear nerve.
Innervation
The nervus intermedius innervates the lacrimal gland and the nasopalatine gland. It innervates parts of the tongue, nose, and ear.
Intraoperative Imaging
Clinical Relevance
Vascular compression of the nervus intermedius can lead to Nervus intermedius neuralgia[^2].