Occipital neuralgia
Arnold’s neuralgia: symptoms, diagnosis and treatment
Occipital neuralgia, also known as Arnold’s neuralgia, is neuropathic pain arising in the upper neck and spreading along one or more occipital nerves. Not all pain at the back of the head is neuralgia: an accurate diagnosis comes before any procedure.
Request an assessment Recognise the symptoms ↓Occipital neuralgia at a glance
Symptoms, the nerves involved and the care pathway: an overview before exploring the details.
The key point: an MRI showing cervical osteoarthritis is not enough to establish the diagnosis. A compatible clinical history, signs elicited on examination and, where appropriate, a consistent response to a selective diagnostic block are needed.
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What is occipital neuralgia?
The term most commonly refers to the greater occipital nerve, arising from the posterior ramus of C2. However, the lesser occipital nerve, which originates from the cervical plexus, and the third occipital nerve, closely related to the C2–C3 joint, may also be involved.
According to the International Classification of Headache Disorders, the typical presentation includes paroxysmal attacks of severe, stabbing or “electric” pain lasting from a few seconds to minutes in the territory of one or more occipital nerves. Persistent tenderness may remain between attacks, with dysaesthesia or allodynia of the scalp.
Greater occipital nerve
Pain spreading from the back of the head towards the crown, often with marked tenderness along the course of the nerve.
Lesser occipital nerve
More lateral pain, spreading towards the area behind the ear and the posterior temporal region.
Third occipital nerve
Suboccipital pain frequently associated with the C2–C3 joint region.
How does it present?
- sudden, shooting, stabbing or electric shock-like pain;
- pain starting at the back of the head and spreading across the scalp, sometimes as far as the crown or fronto-orbital region;
- pain mainly on one side, although both sides may be affected;
- scalp hypersensitivity: brushing the hair, resting the head or wearing a hat may become painful;
- a tender or “trigger” point along the course of the nerve;
- possible associated upper neck pain and painful restriction of certain neck movements.
Pain spreading forwards does not necessarily mean that the problem originates in the trigeminal nerve. Upper cervical and trigeminal sensory inputs converge in the trigeminocervical complex, explaining why pain originating at the back of the head may also be felt at the front.
Not all occipital pain is occipital neuralgia
| Condition | Suggestive features | What needs clarification |
|---|---|---|
| Occipital neuralgia | Brief, intense shooting pains, allodynia, nerve tenderness and temporary relief after a targeted block. | Which nerve is actually involved and whether there is an associated cervical source. |
| Cervicogenic headache | Pain referred from the cervical spine, often provoked by movement or posture and associated with reduced mobility. | Upper cervical facet joints, C2–C3 and musculoskeletal structures. |
| Migraine | Longer attacks, nausea, photophobia or phonophobia; occipital tenderness may coexist. | Whether the occipital component is primary, secondary or a factor maintaining the pain. |
| Myofascial pain | More continuous, aching pain, muscular trigger points and a relationship with strain or posture. | Whether a true neuropathic component is present alongside muscle tension. |
What can cause it?
In many patients, no single cause is identified. Nerve irritation may be associated with neck trauma, previous surgery, irritation or entrapment along muscular and fascial planes, changes in the upper cervical spine or pain originating from the C2–C3 joint. Osteoarthritis may contribute, but an imaging finding alone—also common in people without pain—does not establish the cause of the symptoms.
A new occipital headache accompanied by fever, neurological deficits, significant trauma, sudden “thunderclap” onset, a history of cancer or progressive worsening requires prompt medical assessment and should not be treated as straightforward neuralgia.
Diagnosis: clinical assessment first, interventional testing when needed
Temporary relief after a block is part of the international diagnostic criteria, but it is not a “magic test”: an isolated response must be interpreted in the context of the whole clinical picture.
Treatment: a stepwise strategy
Conservative management
Where appropriate, care may include addressing mechanical factors, targeted physiotherapy, treatment of the myofascial component and medication selected according to the patient’s clinical profile. Repeated injections without a clear diagnosis do not constitute a strategy.
Ultrasound-guided therapeutic block
An occipital nerve block may have both diagnostic and therapeutic value. Ultrasound allows visualisation of anatomical planes, helps trace the nerve and limits injection volumes, improving treatment precision.
Pulsed radiofrequency
In persistent or recurrent cases, following appropriate patient selection, pulsed radiofrequency may modulate nociceptive transmission without intentionally producing a continuous thermal lesion of the nerve. A randomised study showed better pain control than steroid injections in patients with occipital neuralgia or migraine with occipital tenderness, although results were not consistent across all outcomes.
Thermal radiofrequency and cervical targets
Thermal radiofrequency is a lesioning procedure and is not interchangeable with pulsed radiofrequency. It may be considered in highly selected cases, particularly when the target is the third occipital nerve or a cervical medial branch implicated in confirmed facet joint pain. The indication, technique and risk–benefit balance must be individualised.
Safety and possible adverse effects
Procedures are performed under sterile conditions and with ultrasound or fluoroscopic guidance, depending on the target. The most common adverse effects are local pain, bruising, temporary numbness or a transient flare-up. Less commonly, infection, bleeding, neuritis or persistent sensory changes may occur. Anticoagulant medication, allergies, infections and other medical conditions must be assessed before the procedure.
When is specialist assessment appropriate?
- persistent or recurrent occipital pain that does not respond to initial treatment;
- uncertainty between migraine, cervicogenic headache and neuralgia;
- frequent need for painkillers or injections that do not provide adequate relief;
- a previous response, even temporary, to an occipital nerve block;
- suspected involvement of C2–C3, the third occipital nerve or the upper cervical facet joints.
The PONOS specialist pathway
Assessment begins with identifying the source of pain. Only after establishing the diagnosis do we decide whether to treat the occipital nerve, the upper cervical spine, both or neither.
Headache and craniofacial pain centre (Italian) Neck pain (Italian) Occipital nerve radiofrequency (Italian) Request an assessmentFrequently asked questions
Is occipital neuralgia the same as neck pain?
No. They can coexist, but occipital neuralgia has neuropathic features and a defined nerve distribution. Neck pain can arise from joints, muscles, discs or other structures.
Can the pain reach the eye?
Yes. Convergence between upper cervical and trigeminal sensory inputs can cause pain originating in the occipital region to be felt at the front of the head. However, this alone is not enough to establish the diagnosis.
Does an occipital nerve block confirm the diagnosis?
Consistent temporary relief supports the diagnosis, but the response must be interpreted alongside the medical history and examination. Excessive volumes may anaesthetise nearby structures and reduce the specificity of the test.
Are pulsed and thermal radiofrequency the same?
No. Pulsed radiofrequency is a neuromodulatory technique; thermal radiofrequency creates a controlled lesion. The choice depends on the anatomical target, diagnosis and risk profile.
How long does the benefit last?
There is no single duration that applies to everyone. Benefit may be temporary and depends on the diagnosis, the nerve treated, the underlying cause and the individual response.
Selected references
- International Headache Society. ICHD-3: 13.4 Occipital neuralgia.
- Cohen SP et al. Randomized, double-blind comparative-effectiveness study of pulsed radiofrequency versus steroid injections. Pain. 2015.
- Vanelderen P et al. Pulsed radiofrequency for the treatment of occipital neuralgia. Reg Anesth Pain Med. 2010.
- Huang JH et al. Occipital nerve pulsed radiofrequency treatment: a multi-center study. Pain Med. 2012.
- Manolitsis N, Elahi F. Pulsed radiofrequency for occipital neuralgia. Curr Pain Headache Rep. 2014.
This information does not replace a medical assessment. Interventional treatments are considered only after a specialist consultation and an individual assessment of benefits, limitations and risks.