Pain behind the eye without an ophthalmologic cause

Pain described as "behind the eye", "inside the eye", or "back of the eye" is a complaint that frequently begins a long investigative journey: ophthalmologist, neurologist, MRI — and normal results. What many physicians do not check is the posterior cervical region: the suboccipital muscles, the sternocleidomastoid, and the scalenes have referred-pain patterns that reach precisely the retro-ocular and supraorbital region.

Dr. Janet Travell mapped these patterns precisely: the rectus capitis posterior major — one of the four suboccipital muscles — refers pain that literally crosses the skull, going from the nape of the neck to behind the ipsilateral eye. This trajectory explains why the patient feels the pain "inside" the orbit, even though the cause is in the neck. Medical acupuncture in the suboccipitals resolves this pain with notable consistency.

The referral map: from the neck to the eye

  1. Rectus capitis posterior major

    A trigger point at the occipital insertion refers band-like pain crossing the head: it begins in the nape, passes through the parietal region, and ends behind the ipsilateral eye. It is described as "deep" and "diffuse" pain that does not localize clearly to either the head or the eye.

  2. Obliquus capitis superior

    Refers pain to the temporal region and behind the eye, with a pattern slightly different from the rectus capitis posterior major. Compression of the greater occipital nerve by spasm of this muscle generates greater occipital nerve syndrome — a "helmet" headache with frontal radiation.

  3. Sternocleidomastoid (sternal portion)

    Trigger points in the sternal portion of the SCM refer pain to the supraorbital and temporal region and around and inside the eye. Characteristically, they may generate contralateral ocular pain — a finding that confounds the clinical diagnosis.

  4. SCM — autonomic effects

    The SCM has trigger points that, in addition to pain, refer ocular autonomic symptoms: tearing, mild ptosis, conjunctival redness, and disturbances of visual accommodation — frequently confused with Horner syndrome or optic neuritis.

  5. Cervical acupuncture — relief of ocular pain

    Dry needling of the suboccipitals (GB-20, BL-10) and SCM, with 2 Hz electroacupuncture, can reduce referred pain by normalizing local muscle excitability and potentially decreasing compression of the greater occipital nerve. In some patients, retro-ocular pain relieves in hours to days; in chronic cases, the response is progressive over the cycle.

Epidemiologic data

30–40%
OF PRIMARY HEADACHES
estimate in clinical series with significant contribution from cervical trigger points — part includes pictures initially labeled as "migraine" without aura, later reclassified with a cervicogenic component
2
MAIN MUSCLES
The rectus capitis posterior major and the SCM are the muscles that, by clinical experience and Travell/Simons maps, most frequently generate retro-ocular pain by myofascial referral
Most
SHOW IMPROVEMENT
in clinical series of cervicogenic retro-ocular pain treated with medical acupuncture in the suboccipitals in cycles of 6–8 sessions — magnitude variable across studies, recurrent observation in the cervicogenic headache literature
~8 years
MEAN LATE DIAGNOSIS
mean time reported in series referred to pain centers, until patients with cervicogenic headache receive the correct diagnosis — approximate value, with variation by access to specialized assessment

Identifying ocular pain of cervical origin

Critérios clínicos
08 itens

Cervicogenic retro-ocular pain — typical pattern

  1. 01

    Pain described as "inside" or "behind" the eye, without visual changes

  2. 02

    Pain associated with neck stiffness or pain, especially in the nape

  3. 03

    Worsening with prolonged posture: computer screen, phone, reading

  4. 04

    Worsening with specific cervical movements (rotation, extension)

  5. 05

    Pain that begins in the nape and "rises" to the frontal or orbital region

  6. 06

    Normal ophthalmologic exams — fundus, intraocular pressure, visual acuity

  7. 07

    Relief with heat on the nape or massage of the base of the skull

  8. 08

    Association with headache, mild dizziness, or sensation of a "heavy head"

Myths and facts about pain behind the eye

Myth vs. Fact

MYTH

Pain behind the eye is always a problem in the eye itself or in the brain

FACT

The orbit has no pain receptors in most of its internal structures. "Inside the eye" pain almost always comes from adjacent structures: suboccipital muscles, SCM, paranasal sinuses, trigeminal nerve, or temporal artery. Cervical trigger points are the most underestimated cause of retro-ocular pain in adults without abnormal exam findings.

MYTH

If the MRI was normal, the pain is psychological

FACT

Trigger points do not appear on conventional MRI. Myofascial pain syndrome is a clinical diagnosis based on physical examination — palpation of taut bands and reproduction of referred pain. Normal exams exclude serious structural pathology but do not exclude the myofascial cause, which is the most prevalent in this scenario.

MYTH

Triptans and analgesics resolve cervicogenic headache

FACT

Cervicogenic headache with a myofascial component does not respond well to triptans (indicated for migraine via a vasoconstriction mechanism) or to chronic analgesics (which generate rebound headache). Effective treatment attacks the cause — the cervical trigger points — and not just the symptom.

What happens at the first visit

Treatment protocol

Exclusion of serious causes
1st visit

Targeted history-taking for warning signs (pain with fever, visual changes, neck stiffness). Basic ophthalmologic assessment (intraocular pressure, visual acuity) if not performed. Brief neurologic examination. With warning signs absent, proceed to myofascial assessment.

Cervical and suboccipital mapping
1st-2nd visit

Systematic palpation of the suboccipitals (GB-20, BL-10), SCM, scalenes, and upper trapezius. Reproduction of the ocular referral pattern. Identification of generator muscles and treatment sequence.

Suboccipital dry needling
Sessions 1–4

Precise needling of suboccipital trigger points in supine position with the head in neutral position. Deep dry needling technique with handle rotation. 2 Hz electroacupuncture at GB-20–GB-21 and BL-10. Frequently immediate relief of retro-ocular pain.

SCM and complementary work
Sessions 5–8

Dry needling of the SCM (muscle pinching technique with horizontal needle). Treatment of the scalenes if contributing. Postural guidance for computer screen and phone use (eye level to avoid prolonged cervical flexion).

Clinical pearl: myodural ligaments

Frequently asked questions

FREQUENTLY ASKED QUESTIONS · 03

Frequently Asked Questions

If retro-ocular pain is new, severe, or accompanied by warning signs (fever, visual changes, neck stiffness, sudden "thunderclap" onset), imaging investigation is a priority. For chronic, persistent pain with prior normal exams and a clear cervicogenic pattern, myofascial assessment can be performed before or in parallel with additional investigation — the decision is the physician’s after complete clinical evaluation.

A slight worsening in the 24–48 hours after the first sessions of suboccipital dry needling is common — similar to muscle soreness after exercise. This is expected and does not indicate a complication. From the 2nd or 3rd session, the trend is progressive improvement of both cervical pain and referred retro-ocular pain.

Cluster headache is a distinct neurologic condition, with a hypothalamic mechanism, that requires specific medical treatment (oxygen, sumatriptan, verapamil). Although medical acupuncture may contribute as complementary therapy, it is not the first-line treatment for this condition. The physician evaluates the precise diagnosis before defining the best approach.