Occipital neuralgia

01OverviewDefinition, clinical context and the essential points that orientate the chapter.

The greater occipital nerve, largely derived from the dorsal ramus of C2, supplies much of the posterior scalp; the lesser and third occipital nerves cover adjacent territories. Irritation may be idiopathic or associated with muscular entrapment, degenerative upper-cervical structures, trauma or prior surgery. The resulting syndrome is paroxysmal neuropathic pain, not simply any ache at the back of the head. Mapping the pain and identifying allodynia or a focal trigger point helps separate nerve pain from diffuse tension and mechanical neck pain.

No single scan proves occipital neuralgia. Diagnosis is clinical and should be revised when symptoms behave differently: persistent deep unilateral headache after neck injury can reflect dissection; fever and neck stiffness may indicate infection; cough-provoked progressive pain can signal posterior-fossa disease; and electric pain with limb symptoms may arise from cervical cord or root pathology. A local-anaesthetic block can be useful, but improvement may occur in other headache disorders because the occipital nerves feed the trigeminocervical complex.

Evidence for treatment is less standardised than for common primary headaches. The safest sequence is to address mechanical contributors, select a tolerable neuropathic strategy, and use a properly documented nerve block when diagnostic clarification or short-term relief would change care. Repeated steroid-containing injections or invasive procedures should not become routine without meaningful duration of benefit, risk review and a specialist plan. Local formularies and pain-service techniques vary; procedures require appropriate competency, consent and local governance.

Key points

Occipital neuralgia is recurrent unilateral or bilateral shooting, stabbing or sharp pain in the distribution of the greater, lesser or third occipital nerves, usually lasting seconds to minutes.
Pain begins in the upper neck or posterior scalp and can radiate toward the vertex or behind the eye through trigeminocervical convergence; radiation alone does not establish migraine.
Scalp dysaesthesia, allodynia and tenderness over the affected nerve are supportive, particularly when pressure reproduces the familiar paroxysm rather than generic muscular discomfort.
Diagnostic criteria include temporary improvement after local-anaesthetic block, but a block is not perfectly specific and should be interpreted alongside the complete phenotype.
Cervicogenic headache is typically provoked by neck movement with restricted range and referred pain, while migraine more often has hours-long attacks, nausea, sensory sensitivity and activity aggravation.
Examine the scalp, cervical spine, neurological system and fundi where indicated; occipital tenderness can accompany migraine, whiplash, myofascial pain and upper-cervical joint disease.
Imaging is not automatic in a stable classic presentation, but red flags, abnormal examination, recent trauma, malignancy, infection risk or an atypical progressive pattern justify targeted brain or cervical imaging.
Initial care commonly combines explanation, avoidance of repeated pressure, sleep and ergonomic adjustment, physiotherapy and a time-limited neuropathic-pain medicine trial selected for the individual.
An ultrasound-guided or landmark occipital-nerve block may support diagnosis and provide temporary relief; consent must cover local-anaesthetic toxicity, bleeding, infection, alopecia or steroid effects where relevant.
Persistent disability belongs in headache, pain or neurology services; radiofrequency, peripheral nerve stimulation and decompressive surgery have selected roles but limited evidence and require multidisciplinary selection.

02AetiologyUnderlying causes, associations and risk factors, with why each one matters.

Mechanical nerve irritation

Greater, lesser or third occipital nerves may be compressed or irritated by tight muscle, fascial passage points and repetitive upper-neck strain.

Trauma and surgery

Whiplash, direct scalp injury and posterior cervical procedures can damage or entrap an occipital nerve in scar.

Cervical structural disease

Upper-cervical joint, root or bony disease can refer pain into the same posterior scalp distribution and may coexist with true neuralgia.

Idiopathic or secondary disease

No lesion is found in many cases, while tumour, infection, inflammation and vascular disease remain important when red flags are present.

03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.

1
Peripheral nerve irritation
Compression, inflammation or injury lowers the firing threshold of occipital sensory axons and creates ectopic discharges.
2
Paroxysmal pain transmission
Brief bursts travel through upper-cervical afferents, producing stabbing pain, allodynia and tenderness in the posterior scalp.
3
Trigeminocervical referral
Convergence of upper-cervical and trigeminal inputs allows pain to radiate towards the vertex, temple or behind the eye.
4
Sensitisation
Repeated discharges can amplify central pain processing and leave persistent tenderness or background ache between attacks.

04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.

Nerve-territory paroxysm

Seconds-to-minutes stabbing or electric pain travels from the suboccipital region over the posterior scalp in a recognisable greater, lesser or third occipital distribution.

Focal nerve tenderness

Palpation near the superior nuchal line or other emergence point reproduces the person's usual shock, often with surrounding scalp allodynia or altered sensation.

Referred orbital pain

Pain can reach the fronto-orbital area through trigeminocervical connections even though the primary tender focus remains posterior.

Mechanical overlap

Reduced neck movement, sustained posture or upper-cervical tenderness suggests a cervicogenic or myofascial contributor that can coexist with nerve irritation.

Secondary warning signRed flag

Progression, constitutional symptoms, neurological deficit, papilloedema, cancer, immunosuppression or a major change after trauma should displace the benign working diagnosis.

Migraine overlap

Hours-long disabling episodes with nausea, photophobia, phonophobia and movement sensitivity may be migraine with occipital tenderness rather than primary occipital neuralgia.

05InvestigationsWhat to request, why it matters and how to interpret it.

Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

01
Headache chronology and mappingFirst step
Why
Determine whether the pain has a nerve-territory paroxysmal phenotype.
Interpretation and limitations
Draw onset, direction, duration, laterality and trigger points; continuous pressure or diffuse tenderness without shocks weakens the diagnosis.
02
Neurological and cervical examination
Why
Identify sensory change, cord or root signs and a mechanical pain generator.
Interpretation and limitations
Assess cranial nerves, limbs, gait, cervical range and focal palpation; upper motor-neurone signs or persistent dermatomal deficits require a different pathway.
03
Fundoscopy and observations
Why
Look for raised intracranial pressure, hypertension, fever or systemic illness when the history warrants it.
Interpretation and limitations
Papilloedema, altered observations or meningism is incompatible with uncomplicated neuralgia and mandates urgent secondary-headache assessment.
04
MRI brain or cervical spine
Why
Investigate red flags, abnormal examination, prior cancer, trauma or an atypical progressive course.
Interpretation and limitations
Choose the anatomical study according to the suspected lesion; incidental cervical degeneration is common and needs clinical correlation before attributing symptoms.
05
Occipital-nerve local-anaesthetic block
Why
Support the diagnosis and estimate whether peripheral nerve interruption relieves pain.
Interpretation and limitations
Document baseline frequency and expected anaesthetic duration; temporary relief supports but does not uniquely prove occipital neuralgia because migraine may also improve.
06
Inflammatory tests when indicated
Why
Investigate suspected giant-cell arteritis, infection or inflammatory disease rather than routine neuralgia.
Interpretation and limitations
CRP, ESR and blood count are selected by age and systemic clues; normal markers do not overrule compelling ischaemic visual symptoms.

06Differential diagnosisRealistic alternatives and the features that help distinguish them.

Migraine

Hours-long headache with nausea, light or sound sensitivity and activity aggravation favours migraine, although scalp tenderness may coexist.

Cervicogenic headache

Restricted neck movement and pain reliably provoked by cervical structures support cervicogenic referral rather than brief nerve-distribution shocks.

Trigeminal autonomic cephalalgia

Strictly orbital or temporal attacks with prominent ipsilateral autonomic signs and restlessness suggest a TAC rather than occipital-nerve pain.

Dissection or subarachnoid haemorrhage

New sudden posterior pain with focal signs, Horner syndrome or thunderclap onset requires urgent vascular assessment.

07ManagementImmediate care, first-line treatment, alternatives and escalation.

01First assessmentMap pain and screen for dangerFirst stepA patient presents with posterior scalp or upper-neck pain.

1Establish whether attacks are brief, shooting and nerve-distributed, then ask about thunderclap onset, fever, trauma, cancer, immunosuppression, visual change and focal neurological symptoms.
2Examine scalp and nerve emergence points, cervical movement, cranial nerves, limbs and gait, adding fundoscopy and vascular assessment where the differential requires them.
3EscalationEscalate any secondary-headache feature immediately; otherwise explain the provisional diagnosis and acknowledge overlapping migraine or mechanical pain when present.

02Conservative careReduce peripheral and cervical driversThe phenotype is stable and no urgent secondary cause is suspected.

1Identify repeated pressure, sleep position, sustained neck posture and movement restriction, then agree feasible ergonomic adjustments without prescribing rigid immobilisation.
2Refer for physiotherapy when cervical dysfunction contributes, using graded mobility, posture and strengthening rather than forceful high-velocity manipulation near vascular structures.
3Consider a time-limited neuropathic-pain medicine trial with a pre-agreed functional target, adverse-effect review and stopping plan if benefit is not meaningful.

03Diagnostic blockUse an occipital-nerve block deliberatelyDiagnosis remains likely and temporary peripheral nerve interruption would change management.

1Check anticoagulation, allergies, infection, anatomy and prior response, then obtain procedure-specific consent and establish a pre-block pain and attack record.
2A trained clinician administers local anaesthetic using the local technique and observes for intravascular injection, local-anaesthetic toxicity or immediate neurological symptoms.
3Record onset, magnitude and duration of relief against expected anaesthetic action; avoid declaring cure or scheduling repeated steroid injections from a vague same-day improvement.

04Persistent disabilityEscalate to a specialist headache or pain serviceEscalationFunction remains substantially impaired despite a coherent initial plan.

1Reconfirm the diagnosis and treat coexisting migraine, medication overuse, sleep disorder or cervical pathology before labelling the neuralgia refractory.
2Review repeated blocks, pulsed or thermal radiofrequency, stimulation and surgical options against the limited evidence, local expertise and risk of numbness or deafferentation pain.
3Select intervention through shared decision-making and retain longitudinal follow-up so recurrence and procedural complications are not managed episodically.

Key medicines and prescribing safety3 treatments · regimens, roles and cautions

May reduce neuropathic background pain and sleep disruption when non-drug measures are insufficient.

Amitriptyline

For neuropathic pain, a typical oral start is 10 mg at night with slow titration under the current BNF and local formulary; lower starts may suit frailty.

Anticholinergic burden, postural hypotension, sedation, cardiac disease, glaucoma, urinary retention and overdose toxicity limit use; review driving and do not continue without measurable benefit.

A specialist or formulary-supported option for persistent neuropathic occipital pain.

Gabapentin

Use the current BNF neuropathic-pain schedule with low initiation, gradual titration and renal dose adjustment rather than copying a fixed maximum.

Dizziness, somnolence, falls, oedema, misuse and respiratory depression with opioids require review; taper rather than stop abruptly after sustained exposure.

Provides temporary diagnostic and therapeutic interruption of the affected occipital nerve.

Local anaesthetic nerve block

Agent, concentration and maximum weight-based dose are chosen by a trained procedural clinician using the local occipital-block protocol.

Avoid casual dosing: inadvertent intravascular injection, toxicity, bleeding, infection and nerve injury are possible; adding corticosteroid introduces further skin, hair and systemic risks.

08ComplicationsImportant consequences, why they occur and why they matter clinically.

Chronic pain and sleep loss

Repeated attacks and scalp allodynia impair sleep, concentration, hair care and tolerance of headwear or pillows.

Activity and work restriction

Fear of neck movement and unpredictable pain can reduce driving, exercise and occupational participation, promoting deconditioning.

Procedure-related harm

Nerve blocks and invasive treatments carry bleeding, infection, local-anaesthetic toxicity, sensory loss and sometimes alopecia or tissue change.

Missed secondary disease

Treating tenderness as diagnostic can delay recognition of vascular, malignant, infectious or upper-cervical structural pathology if red flags are overlooked.

09Monitoring and follow-upTreatment response, safety checks and longer-term review.

Use a diary to separate brief neuralgic shocks from longer migraine or neck-pain episodes and record the effect on sleep and activity.
Review medicine benefit after titration using a functional target, stopping gradually when adverse effects outweigh a modest or uncertain response.
Reassess promptly if the pain becomes continuous, progressive or associated with neurological, visual, vascular or constitutional features.
After nerve block, document objective duration of relief, injection-site complications, alopecia or pigment change and any symptoms of local-anaesthetic toxicity.
Track cervical mobility and adherence to an active rehabilitation plan without allowing passive procedures to replace movement-based recovery.
For recurrent procedures, review cumulative steroid exposure, anticoagulants and whether each prior intervention produced clinically useful duration of benefit.

10Special situationsVariants, exceptions and circumstances that change the usual approach.

Tenderness is not enough

Posterior scalp tenderness occurs in migraine and muscular pain; the reproduced familiar paroxysm and mapped sensory change make nerve involvement more persuasive.

Eye pain can be referred

Trigeminocervical convergence allows an occipital discharge to be felt behind the eye, so anatomical origin cannot be inferred from the endpoint alone.

Block response is supportive

Local anaesthetic relief is part of recognised diagnostic criteria, but imperfect specificity means it cannot rescue a phenotype that otherwise does not fit.

Incidental imaging misleads

Common degenerative cervical findings should not automatically be called causal unless side, level, examination and symptom behaviour are concordant.

Procedural evidence is uneven

Increasing invasiveness does not guarantee durable benefit; specialist selection and explicit uncertainty are essential before neurodestructive or implanted treatments.

11Common pitfallsFrequent interpretation and management errors.

01
Diagnosing occipital neuralgia from non-specific scalp tenderness alone.
02
Missing vertebral-artery dissection after a neck injury and new posterior pain.
03
Ignoring migraine because pain begins in the occiput.
04
Attributing every MRI degenerative change to the symptomatic nerve.
05
Using repeated steroid blocks without tracking duration or cumulative harm.
06
Continuing sedating neuropathic medicine despite no functional improvement.
07
Offering invasive treatment before rechecking phenotype and comorbidity.