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Related Concept Videos

Cranial Nerves: Overview and Anatomy01:19

Cranial Nerves: Overview and Anatomy

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The cranial nerves are an important part of the complex network of nerves in the human body. These nerves emerge directly from the brain and are responsible for transmitting essential information between the brain and various parts of the head and neck. There are 12 pairs of cranial nerves, systematically numbered using Roman numerals from I to XII, beginning from the anterior and moving to the posterior of the brain. Each cranial nerve is uniquely identified by names that reflect its function...
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Cranial Nerves: Types Part I01:14

Cranial Nerves: Types Part I

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Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
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Cranial Nerves: Types Part II01:22

Cranial Nerves: Types Part II

3.5K
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves. While the first six innervate the head and neck, the latter six nerves innervate the head and neck, as well as organs and tissues in the thoracic and abdominal cavities. They facilitate communication, expression, and autonomic control within the human body.
Facial Nerve (Cranial Nerve VII)
Cranial nerve VII, or the facial nerve,...
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Arteries of the Head and Neck01:26

Arteries of the Head and Neck

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The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
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Cranial Part of Parasympathetic Division01:18

Cranial Part of Parasympathetic Division

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The cranial part of the parasympathetic division plays a crucial role in regulating the visceral functions of the head and specific structures in the neck, thoracic, and abdominopelvic cavities. Preganglionic fibers of the parasympathetic division exit the brain through cranial nerves III (oculomotor), VII (facial), IX (glossopharyngeal), and X (vagus), delivering parasympathetic output to the respective visceral structures.
The vagus nerve (cranial nerve X) alone accounts for approximately 75...
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Cranial and Spinal Meninges01:19

Cranial and Spinal Meninges

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
Cranial Meninges
These meningeal layers cover the cranium. The dura mater is the outermost layer of cranial meninges. It is a thick and durable membrane of dense...
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Author Spotlight: Minimally Invasive Relief for Occipital Neuralgia at the Nuchal Line
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Cranial Neuralgias.

Carrie Robertson

    Continuum (Minneapolis, Minn.)
    |May 28, 2021
    PubMed
    Summary

    Trigeminal neuralgia (TN) diagnosis relies on patient history and neurological exams. While often caused by nerve compression, genetic factors may predispose some individuals to TN, especially those with early onset or bilateral symptoms.

    Area of Science:

    • Neurology
    • Neurosurgery
    • Pain Management

    Background:

    • Trigeminal neuralgia (TN) is a common cause of facial pain.
    • Most TN cases stem from vascular compression, demyelination, or tumors impacting the trigeminal nerve.
    • Emerging research indicates a genetic component in up to 11% of TN cases, potentially leading to earlier onset or bilateral facial pain.

    Purpose of the Study:

    • To outline the differential diagnosis, evaluation, and management strategies for trigeminal neuralgia.
    • To review other head and neck neuralgias, including those causing neuralgic ear pain.

    Main Methods:

    • Diagnosis is established through detailed patient history and neurological examination.
    • Key diagnostic considerations include pain characteristics, triggers, dermatomal distribution, and sensory deficits.

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  • Evaluation for secondary causes of neuropathic facial pain is crucial for all new cases.

    • Main Results:

    • Vascular compression remains the most frequent etiology of trigeminal neuralgia.
    • A family history of TN suggests a possible genetic predisposition, potentially influencing disease presentation.
    • Sensory deficits identified during examination are strong indicators of an underlying secondary cause.

    Conclusions:

    • Accurate diagnosis of trigeminal neuralgia requires a thorough clinical assessment.
    • Identifying secondary causes is paramount in managing neuropathic facial pain.
    • Understanding the role of genetics may refine diagnostic and treatment approaches for specific patient groups.