Trigeminal neuropathy is a condition characterized by a specific pattern and location of facial pain. Clinical features involve unilateral and paroxysmal attacks of very intense pain in one or more areas innervated by the trigeminal nerve. The pathogenesis is frequently unclear and the vast majority of cases remain idiopathic. A thorough patient history and a physical examination are crucial steps of the workup, whereas imaging studies and neurophysiological testing are often necessary to solidify the diagnosis.
Trigeminal neuropathy is an important neuropathic disorder that can have a considerable impact on the quality of life   . This condition is often regarded as idiopathic, although vascular compression of the trigeminal nerve seems to be the most probable cause in the majority of patients  . Tumors and demyelinating diseases (for example multiple sclerosis) have been described as potential etiologies as well  . The main symptom of this condition, namely facial pain, stems from the irritation of the trigeminal nerve and its branches - ophthalmic (V1), maxillary (V2), and mandibular (V3) nerves    . The pain is characterized as stabbing, superficial, electric shock-like, sharp, or intense pain, and regarded as a very debilitating condition   . It is virtually always unilateral, but isolated reports show that bilateral occurrence has been encountered in about 30% of multiple sclerosis patients affected by trigeminal neuropathy . The onset is paroxysmal, lasting seconds to minutes, and is often precipitated by a seemingly benign event, such as a light touch, on the affected side of the face   . One or more divisions of the trigeminal nerve are involved while the pain never spreads to parts of the head and neck which are not innervated by the trigeminal nerve    .
Entire Body System
- Constitutional Symptom
In the present case report, of a plasmacellular type localized within the mesenterium, a 25-year-old woman exhibited a clinical picture of right trigeminal neuropathy (together with more common constitutional symptoms and laboratory findings), which promptly [ncbi.nlm.nih.gov]
- Hand Pain
OBJECTIVE: Although surgery using a polyglycolic acid-collagen (PGA-c) tube is effective for peripheral nerve injury-induced chronic hand pain, it has not been applied to trigeminal nerve lesions because of the difficult approach. [ncbi.nlm.nih.gov]
Trigeminal neuropathy and neuralgia are most commonly caused by vascular compression. Only 9 cases of trigeminal neuropathy and neuralgia due to pontine infarction have been reported in medical literature. [ncbi.nlm.nih.gov]
Conditions not covered by these SOPs Classical trigeminal neuralgia* (trigeminal neuralgia) Cluster headache* Glossopharyngeal neuralgia # Herpetic neuralgia # - That is pain at the time of the infection (Herpes Zoster) Migraine* Neuropathy in other cranial [clik.dva.gov.au]
- Trigeminal Neuralgia
Cases 1 and 2 had trigeminal neuralgia, which had previously been incorrectly attributed to osteoma and maxillary sinus retention cyst, respectively, and resulted in inappropriate dental surgical procedures. [ncbi.nlm.nih.gov]
neuralgia* (trigeminal neuralgia) Tic Douloureux* (trigeminal neuralgia) Trigeminal neuralgia* * another SOP applies - the SOP has the same name unless otherwise specified Clinical onset The clinical onset is the earliest time prior to the confirmation [clik.dva.gov.au]
- Cranial Nerve Involvement
Cranial nerve involvement in patients with leprous neuropathy. Neurol India 2006; 54: 283–285. Sumner CJ and Fischbeck KH. Jaw drop in Kennedy’s disease. Neurology 2002; 59: 1471–1472. [oasisdiscussions.ca]
Group 1 involved patients such as those described above with oculosympathetic paresis and trigeminal and potentially other cranial nerve involvement. [medlink.com]
Less often, diabetic patients may develop focal and multifocal neuropathy that includes cranial nerve involvement, limb and truncal neuropathies. [scielo.br]
Severe dysphagia in lower cranial nerve involvement as the initial symptom of Wegener's granulomatosis. Journal of the Neurological Sciences. 2007; 263 (1-2):187–190. [ PubMed ] [ Google Scholar ] 112. Pamuk ON, Doğutan H, Pamuk GE, Cakir N. [ncbi.nlm.nih.gov]
The diagnostic workup of patients in whom trigeminal neuropathy is suspected should start with a comprehensive patient history during which the physician must cover the duration of symptoms and the characteristics of pain, including its pattern of occurrence as well as severity and location   . Together with the obtained information, the physical examination can provide important clues to the etiology of the disease. Reduced sensitivity of the trigeminal branches, either partial or total (hypoesthesia and anesthesia, respectively), during the neurological examination is a crucial finding in this patient population and should prompt a more detailed investigation . Imaging studies, mainly magnetic resonance imaging (MRI), are highly useful in recognizing an ongoing process in the brain that could induce trigeminal neuropathy    . MRI is particularly useful for detecting vascular malformations that compress the trigeminal nerve and currently serves as a gold-standard for the examination of craniofacial pain . Some authors recommend X-rays and computed tomography (CT) scans to exclude other, more common, pathologies  . In addition, neurophysiological trigeminal reflex testing has shown to be equally effective compared to MRI in identifying trigeminal neuropathy  .
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