VA Migraines Secondary to PTSD
How to file VA migraines as secondary to service-connected PTSD — the medical link, what a strong nexus letter needs to say, and how the rating ladder works.
Migraines are commonly secondary to PTSD through stress-mediated mechanisms. A nexus letter citing peer-reviewed literature, combined with treatment records and a prostrating-attack log, is the strongest evidence combination for this type of claim.
Migraine claims secondary to PTSD are well-supported in the medical literature, which makes them one of the more approvable secondary claims when the evidence is put together correctly — the challenge is usually documentation, not the underlying medical theory.
Why the Medical Link Works
Chronic stress activation, disrupted sleep, and certain psychiatric medication side effects all independently increase migraine frequency and severity. Multiple peer-reviewed studies document elevated migraine rates among individuals with PTSD compared to the general population, which is exactly the kind of established medical literature a strong nexus letter should cite directly.
What the Rating Depends On
Migraines are rated under DC 8100 based on the frequency of prostrating attacks — episodes severe enough to require lying down and stopping normal activity — not on migraine frequency alone. A veteran with frequent mild headaches but few truly prostrating episodes will rate lower than one with less frequent but more severe, incapacitating attacks.
Want to understand exactly what your provider's letter needs to include?
Learn What Makes a Strong Nexus LetterBuilding the Nexus Letter
- Cite specific literature connecting PTSD and migraine frequency, not just a general statement of plausibility
- Address the veteran's individual case — medication history, sleep disruption, stress triggers
- State the connection using 'at least as likely as not' language, which meets the VA's evidentiary standard
- Reference the treating provider's direct observation of the pattern over time, not just a one-time evaluation
Evidence to Gather
- A detailed headache log tracking frequency, duration, and whether each episode was prostrating
- Treatment records showing ongoing migraine management
- A nexus letter from a qualified provider addressing the PTSD connection specifically
- Confirmation of existing service connection for PTSD
Medication-Induced Migraines Are Worth Checking For
Some psychiatric medications prescribed for PTSD carry migraine or headache as a documented side effect. If your migraines began or worsened after starting a specific medication, that's worth mentioning to your provider separately — it can actually strengthen a secondary claim by giving the nexus letter a more specific mechanism to cite than stress alone.
Frequently asked questions
Conclusion
If you have service-connected PTSD and migraines, the secondary claim is well-supported by established medical literature — the work is in building the documentation, not the underlying medical theory. Educational only. Not legal advice.
Want to understand exactly what your provider's letter needs to include?
Learn What Makes a Strong Nexus Letter