Short Answer
Do not start with TMJ. Sudden severe headache is a medical safety signal that should be separated first.
How to think about it
Jaw pain can overlap with headache, neck tension, or facial pain, but a sudden severe headache, worst-ever headache, neurologic symptoms, fever, or trauma changes the evaluation priority.
Evidence and limits for this question
What this question checks
This page uses the question "A sudden severe headache comes with jaw pain. Can this be TMJ?" to organize a symptom pattern before assuming a TMJ-related cause.
What to rule out first
Urgent, organ-specific, dental, ENT, neurologic, traumatic, infectious, or breathing-related warning signs should be considered before jaw-related interpretation.
What is reviewed in clinic
Consultation details, symptom timing, jaw movement, chewing muscle tension, bite changes, previous exam results, and recurrence patterns may be reviewed together.
What not to decide from this page
Do not use this page alone to choose a diagnosis, appliance, procedure, medication, or emergency response.
Safety note
Sudden severe headache, neurologic signs, fever, trauma, stiff neck, or vision change may require medical evaluation before jaw-related interpretation.