trigeminal neuralgia cause

12
Dec
trigeminal neuralgia cause

Trigeminal Neuralgia Causes

Some of the important causes of Trigeminal Neuralgia .

  • Compression from near-by blood vessels. Majority of TN cases occur due to compression of the trigeminal nerve by one or more arteries and/or veins.1 Large or small blood vessels can grow over, wrap themselves around, or combine together to squeeze the nerve. A constant irritation to the nerve can also occur from the pulsating action of blood vessels. The exact mechanism of how or why blood vessels end up pressing against the trigeminal nerve is not understood.sometime idiopathic pathology.
  • Multiple sclerosis (MS). MS is a Neurodegenerative and inflammatory condition that causes breakdown of the Myelin sheath around the nerves. This loss of Protective coating around the Trigeminal nerve can cause irritability to the nerve, resulting in TN as potentially an early symptom of MS.
  • Tumors and cysts. Tumors such as Meningiomas and Neuromas in the brain can either compress the trigeminal nerve directly, or push blood vessels against the nerve causing TN.
  • .blood vessel abnormalities. aneurysms (weak blood vessels with a bulge) and arteriovenous malformations (abnormal blood vessels that grow randomly) in the brain can cause compression and injury to the trigeminal nerve’s myelin sheath, resulting in tn. these are life-threatening abnormalities and require immediate medical attention.
  • Virus. Like many other neurological disorders, viruses may be a cause for TN. But very less in virulance.
  • Other causes. Abnormally thickened Arachnoid tissue layer of the Brain, Trauma, and Nutritional deficiencies may cause damage to the trigeminal nerve resulting in TN. Inflammatory conditions such as Sarcoidosis and Lyme disease or vascular diseases such as Scleroderma and Systemic Lupus Erythematosus may also cause TN. It is possible that certain dental procedures or fillings may trigger an already developing TN to suddenly become fully noticeable.
  • Unknown cause. When the cause of TN cannot be identified by clinical or diagnostic tests, it is called idiopathic trigeminal neuralgia, meaning there is no identifiable cause.

Atypical TN is presumed to be caused by tumors or cysts. Typical TN with symptoms on both sides of the face is also believed to commonly have a cancerous origin.