🦷 TMJ-Related Headache Differential Simulator

A Headache Walks Into the Clinic

One symptom, three very different origins — jaw joint, blood vessels, or muscle.

• ~50%: Adults with recurring headache (global prevalence)
• 5–12%: TMJ disorder prevalence (of adults)
• ~12%: Migraine prevalence (of adults)
• ~40%: Tension-type prevalence (most common type)

Why differential matters

Same complaint, different treatment paths entirely.

Three key questions

Where does it hurt, and does chewing worsen it?

Jaw-movement trigger is the single fastest clue toward TMJ origin.

Overlap complicates diagnosis

TMJ pain can mimic both migraine and tension patterns.

Temporomandibular Joint Referred Pain

Jaw joint inflammation refers pain to the temple and in front of the ear.

• Temporal: Typical location (/ preauricular)
• Strong: Jaw-movement trigger (chewing, yawning)
• Clicking: Joint sounds (or crepitus common)
• Masseter: Muscle involved (/ temporalis)

Pain location

Concentrated near the ear and temple, often one-sided.

The defining trigger

Chewing, clenching, or wide yawning sharply worsens pain.

Pain that tracks jaw movement almost always points to TMJ.

Associated findings

Joint clicking, limited opening, and morning jaw stiffness.

Unilateral Throbbing Vascular Headache

Migraine pain pulses on one side, independent of jaw motion.

• Unilateral: Typical location (frontotemporal)
• Absent: Jaw-movement trigger (not provoked by chewing)
• Common: Photophobia (light sensitivity)
• 4–72h: Duration (untreated attack)

Pain location

One-sided, throbbing, often behind the eye or temple.

Not jaw-triggered

Chewing or jaw movement does not change the pain.

Absence of a jaw-movement trigger rules TMJ origin out.

Associated symptoms

Nausea, photophobia, and phonophobia frequently accompany it.

Bilateral Band-Like Pressure Headache

Tension headache feels like a tight band around the whole head.

• Bilateral: Typical location (band-like pressure)
• Absent: Jaw-movement trigger (stress-related instead)
• Pressing: Pain quality (not throbbing)
• Stress: Common cause (/ muscle tension)

Pain location

Even pressure circling both sides of the head.

Not jaw-triggered

Chewing has no meaningful effect on intensity.

Bilateral, non-throbbing pressure favors tension-type headache.

Associated symptoms

Scalp and neck muscle tenderness, mild in intensity.

Reaching a Differential Diagnosis

Location plus jaw-movement response together point to one category.

• Location: Key first question (temporal, one-side, or both)
• Jaw trigger: Key second question (worsens with chewing?)
• ~50%: TMJ referral rate (of TMD patients report headache)
• High: Misdiagnosis risk (without jaw-movement history)

Decision rule

Jaw-triggered temporal pain: TMJ. No trigger, one side: migraine.

Bilateral rule

No jaw trigger, both sides pressing: tension-type headache.

Always ask about chewing before labeling a headache migraine.

Next steps

Confirm with jaw exam, imaging, or headache diary as needed.