trigeminal


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

trigeminal

 [tri-jem´ĭ-nal]
triple.
pertaining to the fifth cranial nerve (trigeminal nerve).
trigeminal nerve the fifth cranial nerve; it arises in the pons, is composed of sensory and motor fibers, and has three divisions: ophthalmic, maxillary, and mandibular. (See anatomic Table of Nerves in the Appendices.) The ophthalmic division supplies sensory fibers to the skin of the upper eyelid, side of the nose, forehead, and anterior half of the scalp. The maxillary division carries sensory impulses from the mucous membranes of the nose, the skin of the cheek and side of the forehead, and the upper lip and upper teeth. The mandibular division carries sensory impulses from the side of the head, chin, mucous membrane of the mouth, lower teeth, and anterior two-thirds of the tongue. (This nerve is sometimes called the great sensory nerve of the head.) The motor fibers are part of the mandibular branch and supply several of the muscles of chewing. Neuralgia of this nerve is the condition known as tic douloureux.
Areas of innervation by each of the three branches of the trigeminal nerve.

tri·gem·i·nal

(trī-jem'i-năl),
Relating to the fifth cranial (trigeminus) nerve.
Synonym(s): trigeminus
[L. trigeminus, threefold]

trigeminal

(trī-jĕm′ə-nəl)
adj.
Of or relating to the trigeminal nerves; trifacial.
References in periodicals archive ?
In many cases, patients were diagnosed as having Bell's palsy or trigeminal neuralgia for years before being diagnosed with skin cancer.
Trigeminocervical complex (TCC) includes the pseudounipolar trigeminal ganglion that has central afferent projections to the trigeminal nucleus caudalis in the medullary spinal cord, and a peripheral projection, largely from the ophthalmic division of the trigeminal ganglion, which innervates the cranial blood vessels and other cranial structures, including the pain-sensitive dura mater, via meningeal nociceptors.
VZV is known to reside in the trigeminal ganglia, but should it also reside in the pterygopalatine ganglion which is responsible for innervating the lacrimal gland, tearing and conjunctival injection may ensue with reactivation of the virus [8, 10].
The MRI revealed a prominent cerebellar vein impinging on the lateral aspect of the left trigeminal nerve (Figures 2(a) and 2(b)).
Cases where terminal branch neuralgia of the trigeminal nerve is in question are quite rare, and they frequently appear in the form of continuous pain.
Box 1: Diagnostic criteria for classical trigeminal neuralgia.
The system delivers the low-level electrical stimulation to the branches of the trigeminal nerve, which sends therapeutic signals to the parts of the brain thought to be involved in ADHD.
Upon inflation, the balloon compresses the trigeminal ganglion, which induces a controlled injury leading to impaired ability of the nerve to transmit pain signals (6).
International Headache Society had recently proposed strict clinical criteria for trigeminal neuralgia diagnosis and according to this, diagnosis only can be made when there are at least three attacks of unilateral facial pain occur fulfilling the following criteria such as (1) occurring in one or more divisions of the trigeminal nerve, with no radiation beyond the trigeminal distribution and (2) pain with at least, recurring in paroxysmal attacks lasting from a fraction of second to 2 minutes or severe intensity or electric shock-like, shooting, stabbing, or sharp in quality or precipitated by innocuous stimuli to the affected side of the face (9).
Trigeminal neuralgia is a neuropathic painful disorder that is brief in duration, electric shock-like in character, abrupt in onset and termination, and is restricted to the distribution of one or more division's of trigeminal nerve1.
He was then diagnosed with trigeminal neuralgia, a disease that converts every sensation felt on his face into agonizing pain.