Which nerve is involved in Frey syndrome?

In Frey syndrome, researchers believe that the parasympathetic and sympathetic nerves near the parotid glands are cut, especially tiny branches originating from the auriculotemporal nerve. The auriculotemporal nerve supplies nerves (innervates) to certain structures in the face including the parotid glands.

What does the auriculotemporal nerve innervate?

The auriculotemporal nerve is a branch of the mandibular division of the trigeminal nerve and supplies sensation to the tragus and helical crus. The posterior branch of the greater auricular nerve also innervates some of the posterior ear.

What does the auriculotemporal nerve affect?

The auriculotemporal nerve is a branch of the mandibular nerve that provides sensation to several regions on the side of your head, including the jaw, ear, and scalp. For much of its course through the structures of your head and face, it runs along the superficial temporal artery and vein.

Is auriculotemporal nerve in Infratemporal fossa?

Anatomical relationships between the auriculotemporal nerve and the muscles of mastication, temporomandibular joint, and surrounding vessels in the area of the infratemporal fossa create favourable conditions for entrapment syndromes.

Why does Frey syndrome occur?

The synkinetic mechanism for Frey syndrome is aberrant reinnervation of postganglionic parasympathetic neurons to nearby denervated sweat glands and cutaneous blood vessels. Consequently, this results in flushing and sweating in the sympathetically void skin in response to mastication and salivation.

What causes parotid nerve damage?

What Causes Parotid Gland Problems? The most common causes of facial nerve disorders as a result of the parotid gland is tumors (pleomorphic adenoma), malignancy (adenoid cystic carcinoma, adenocarcinoma), trauma, and infectious process.

How is auriculotemporal nerve formed?

The mandibular branch of the trigeminal nerve exits the cranium out of the foramen ovale. After exiting the skull, the auriculotemporal nerve branches off where it has a superior and posterior root encircling the middle meningeal artery before joining together to form one nerve.

What is Jacobson nerve?

Jacobson’s nerve is a tympanic branch of the glossopharyngeal nerve, arising from its inferior ganglion. It enters the middle ear cavity through the inferior tympanic canaliculus, runs in a canal on the cochlear promontory and provides the main sensory innervation to the mucosa of the mesotympanum and Eustachian tube.

What nerves are in the infratemporal fossa?

The anterior division contains the masseteric nerve, the anterior and posterior deep temporal, the medial and lateral pterygoid nerves and the buccal nerve. Meanwhile, the posterior division includes the auriculotemporal nerve, the lingual nerve, the inferior alveolar nerve and the mylohyoid nerve.

Is Frey’s syndrome permanent?

Although potentially embarrassing and inconvenient, Frey’s syndrome is otherwise harmless and treatable. Various topical medications are available with varying degrees of temporary relief. Permanent resolution of Frey’s syndrome is available through a reconstructive procedure of a usually unaddressed parotid defect.

Is parotid surgery safe?

Most patients are able to go home one day after surgery. Complications of surgery include bleeding, infection, facial nerve weakness which is usually temporary, and numbness of the skin around the neck and ear. Other complications include a seroma or fluid collection under the skin, which is why the drain is placed.

What kind of nerve dysfunction is Frey syndrome?

Frey syndrome, also known as Baillarger’s syndrome, auriculotemporal syndrome, Dupuy syndrome, or gustatory hyperhidrosis, is a dysfunction of the auriculotemporal nerve. The auriculotemporal nerve, a branch of the trigeminal nerve, consists of parasympathetic fibers that supply the parotid gland to induce salivary production,

How is Freys syndrome related to Dupuy’s syndrome?

Frey’s syndrome (also known as Baillarger’s syndrome, Dupuy’s syndrome, auriculotemporal syndrome, or Frey-Baillarger syndrome) is a rare neurological disorder resulting from damage to or near the parotid glands responsible for making saliva, and from damage to the auriculotemporal nerve often from surgery. The symptoms of Frey’s syndrome are

How did auriculotemporal syndrome get its name?

It is named after Łucja Frey-Gottesman. The disorder was first reported in the medical literature by Baillarger in 1853. A neurologist from Poland, Dr. Lucja Frey, provided a detailed assessment of the disorder and coined the term “auriculotemporal syndrome” in 1923. Office of Rare Diseases Research (2011).

How does Frey’s syndrome affect the parotid gland?

This is sometimes termed “gustatory neuralgia”. Frey’s syndrome often results as a complication of surgeries of or near the parotid gland or due to injury to the auriculotemporal nerve, which passes through the parotid gland in the early part of its course.