I keep returning to this topic because trigeminal neuralgia needs to be discussed, not to frighten, but to educate, explain, and foster understanding.
1. Classical Trigeminal Neuralgia
This is the most widely recognized form of the disease, characterized by sudden, piercing paroxysms of facial pain that can paralyze a person for seconds or minutes.
It typically affects one side of the face, most commonly in the jaw and lower jaw region (the second and third branches of the trigeminal nerve).
In many cases, the cause is compression of a blood vessel against the trigeminal nerve, leading to irritation and structural changes.
MRI can reveal this compression.
Two subtypes are distinguished:
- Purely paroxysmal classical neuralgia — pain occurs only in attacks, and between them the patient is symptom-free.
- Classical neuralgia with concomitant continuous pain — pain does not fully disappear between attacks, which may indicate nerve sensitization, that is, its increased hypersensitivity.
2. Secondary (Symptomatic) Trigeminal Neuralgia
This form occurs when neuralgia is a symptom of another disease.
The pain is not "spontaneous." It has a specific cause, such as:
- a tumor near the nerve,
- vascular malformations,
- multiple sclerosis (MS).
Diagnosis is confirmed by MRI and sometimes neurophysiological studies.
Types of secondary neuralgia include:
- Neuralgia associated with multiple sclerosis — the result of demyelination of nerve fibers.
- Neuralgia caused by compression from a tumor or other lesion.
- Neuralgia associated with other conditions, such as skull bone deformities or vascular disorders.
In this form, pain is often accompanied by sensory disturbances — numbness, tingling, or skin hypersensitivity.
3. Idiopathic Trigeminal Neuralgia
This is the form in which no cause can be identified — imaging and neurological findings are normal.
Despite this, the pain is identical to other types: sudden, stabbing, like an electric shock.
Sometimes continuous pain appears between attacks, making this form particularly challenging to treat and live with.
4. Painful Trigeminal Neuropathy
Here the pain has a different basis — it is caused by damage to the trigeminal nerve itself.
It is not always paroxysmal. It is frequently continuous, burning, throbbing, or pressure-like.
Symptoms typical of neuropathic pain usually accompany it:
- allodynia (pain triggered by touch, cold, wind),
- hyperalgesia,
- sensory disturbances.
Causes of this form vary:
- Herpes zoster (the VZV virus, the same virus that causes chickenpox),
- Nerve trauma (e.g., after dental procedures, surgery, or an accident),
- Other diseases that damage tissues or vessels,
- And sometimes the cause remains idiopathic, meaning unknown.
What This Means for Patients
Every case of trigeminal neuralgia is different. There is no single pattern and no single cause.
That is why thorough diagnostic workup is so important, to treat not just the symptom but to understand what is causing it.
For some, the solution may be pharmacological treatment; for others, a microvascular decompression procedure; and for still others, pain management therapy and psychological support.
Natalia — since 2014 I've been living with trigeminal nerve pain. I write in plain language, based on reliable sources and personal experience. Read my story →
Frequently Asked Questions
What is trigeminal neuralgia?
Trigeminal neuralgia is a chronic facial pain condition. It manifests as sudden, severe, usually one-sided pain attacks — often described as an electric shock. A single attack typically lasts from a few seconds to about two minutes.
What is the difference between neuralgia and neuropathy?
In simple terms: neuralgia primarily involves paroxysmal pain along a nerve, usually without loss of sensation. Neuropathy involves nerve damage that more often causes constant pain along with numbness and sensory loss.
Do regular painkillers help with neuropathic pain?
Usually not. Neuropathic pain responds poorly to paracetamol or anti-inflammatory drugs. Instead, medications that act on nerves are used, such as anticonvulsants like carbamazepine.
What is microvascular decompression (MVD)?
MVD is a neurosurgical procedure in which the vessel compressing the trigeminal nerve is moved away. In eligible patients, it provides the most durable pain relief. The decision is made by the treating team.
Why is an MRI performed?
MRI helps detect neurovascular conflict and rule out other causes of pain, such as tumors or multiple sclerosis. The diagnosis of neuralgia itself is primarily clinical.
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