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Trigeminal nerve and craniofacial pain

Percorso specialistico nelle nevralgie e nei dolori trigeminali complessi

Valutazione specialistica per nevralgia trigeminale resistente
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  2. Trigeminal nerve and craniofacial pain

The trigeminal nerve: its role in craniofacial pain

The trigeminal nerve represents the main sensory pathway of the face and is involved in numerous craniofacial pain patterns, which can present very different characteristics in terms of intensity, distribution, and response to treatment.

Not all facial pain is trigeminal neuralgia. This page guides you through three steps: understanding the pain, reaching a diagnosis and considering treatment.

The trigeminal nerve is divided into three branches: V1, ophthalmic; V2, maxillary; V3, mandibular. The painful area helps guide the examination, but it is not enough on its own to establish a diagnosis.

1. Understanding the pain: neuralgia and other causes

In common language, the term “trigeminal neuralgia” is often used improperly. From a clinical perspective, it is essential to distinguish between:

  • Trigeminal neuralgia: brief attacks, often shock-like, triggered by mild stimuli; continuous pain may coexist
  • persistent facial pain
  • Other causes of facial pain: dental pathologies, temporomandibular disorders, neuropathies, and headaches require a distinct assessment

These conditions have different mechanisms and require different approaches.

When to seek specialist assessment

A specialist evaluation of trigeminal pain is useful in the presence of:

  • intense or disabling facial pain
  • recurrence or progression of symptoms
  • insufficient response or intolerance to pharmacological therapy
  • complex or atypical clinical patterns

In these cases, the goal is not to “treat the nerve,” but to understand the role of the trigeminal nerve within the overall clinical picture.

2. Reaching a diagnosis

The PONOS Clinic approach to trigeminal pain is based on a structured pathway, which may include:

  • specialist clinical evaluation
  • analysis of pain history
  • review of imaging studies
  • possible selective diagnostic tests

In suspected neuralgia, magnetic resonance imaging helps look for secondary causes and evaluate the relationship between the nerve and vessels. Simple vascular contact does not confirm the diagnosis. Selective blocks must also be interpreted within the clinical context.

trigeminal assessment pathway.

3. Evaluating medications and treatments

For neuralgia, carbamazepine and oxcarbazepine are the first-choice drugs. If control is insufficient or the therapy is poorly tolerated, procedural and surgical options are also discussed. In the classical form, microvascular decompression is the first recommended surgical option, when appropriate for the patient. EAN Guidelines.

Among the options that can be evaluated:

  • selective injections for diagnostic or therapeutic purposes
  • selective radiofrequency of the trigeminal branches (V1, V2, V3)
  • integration into complex pain management pathways

The choice distinguishes between pulsed and thermal radiofrequency, as well as peripheral or ganglion targets. Their indications and risks differ.

Trigeminal radiofrequency: overview · V1 and trigeminal radiofrequency options · V2, maxillary branch · V3, mandibular branch.

Indications and limitations

It is important to clarify that:

  • not all forms of facial pain are suitable for trigeminal nerve procedures
  • the response is variable
  • the procedure does not replace clinical follow-up
  • treatment must form part of a comprehensive care plan

The SPG pathway is distinct. The sphenopalatine ganglion is distinct from the trigeminal ganglion. SPG assessment is relevant to selected conditions and is not an automatic next step when medication is ineffective.

Sphenopalatine ganglion: overview · SPG indications and limitations · Cluster headache.

👉 For a comprehensive view of the diagnostic and therapeutic pathway, also visit the page
Turin Headache Centre – Resistant migraines and craniofacial pain (in Italian)

Clinical experience

The interventional management of trigeminal pain is handled by Dr Evangelos Panagiotakos MD within a rigorous and selective clinical pathway, developed over years of experience dedicated to complex craniofacial pain.

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Links to trigeminal pain pages

Scientific references

Selected references for further reading on the diagnoses and treatments discussed on this page.

  1. Bendtsen L et al. European Academy of Neurology guideline on trigeminal neuralgia. Eur J Neurol. 2019;26:831–849. (Guidelines)
  2. Ziegeler C et al. Idiopathic Facial Pain Syndromes—An Overview and Clinical Implications. Dtsch Arztebl Int. 2021;118:81–87. (Clinical review)
  3. Ho KWD, Przkora R, Kumar S. Sphenopalatine ganglion: block, radiofrequency ablation and neurostimulation – a systematic review. J Headache Pain. 2017;18:118. (Systematic review)

Indications depend on the diagnosis and technique: thermal and pulsed radiofrequency have different objectives and evidence bases.