The cause of trigeminal neuralgia is not exactly known.
However in all cases, it is the excessive burst of nervous activity from a damaged nerve that causes the painful attacks.
The characteristic feature of trigeminal neuralgia is the trigger zone i.e. a small area in the central part of the face, usually on a cheek, nose, or lip, which on stimulation triggers a typical burst of pain. A light touch or vibration is the most frequent and effective trigger. As a result even common daily activities trigger the attacks.
Common daily activities that can trigger pain are:
Some people may need hospitalization for rapid pain control if the pain becomes unmanageable at home.
Your doctor will take a comprehensive medical history and do a thorough physical examination. Physical examination of the head in people with trigeminal neuralgia is normal.
Medical history may include questions regarding pain like how severe is it, what part of your face is affected, how long does it lasts and what seems to trigger it. Your doctor will conduct a neurological examination, during which he or she examines and touches parts of your face to try to determine exactly where the pain is occurring and the branches of the trigeminal nerve that are affected.
As facial pain can be caused by various disorders, an accurate diagnosis is essential. Your doctor may order tests such as computed tomography (CT) scan or magnetic resonance imaging (MRI) scan to rule out associated condition, such as skull or brain tumor, infection, or neurological condition.
Most people with trigeminal neuralgia respond to medications and require no surgical treatment. Hence medications are usually the initial treatment for trigeminal neuralgia.
The commonly used medications for relieving pain in trigeminal neuralgia include:
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