How VA rates migraine
DC 8100 considers the frequency and disabling character of migraine attacks. The 50% criterion requires very frequent, completely prostrating and prolonged attacks productive of severe economic inadaptability. The regulation does not set a weekly cutoff for 50%; frequency alone is insufficient.
Rating criteria from the tool data
| Rating | What VA looks for |
|---|---|
| 0% | Attacks less frequent than the compensable criteria below. |
| 10% | Characteristic prostrating attacks averaging one in two months over the last several months. |
| 30% | Characteristic prostrating attacks averaging once a month over the last several months. |
| 50% | Very frequent, completely prostrating and prolonged attacks productive of severe economic inadaptability. |
DBQ and symptom topics to review
Review these topics against your own records and symptoms. Do not exaggerate or minimize; describe functional impact accurately.
- Attacks less frequent than the compensable criteria below.0%Compare the complete criterion with documented findings; not a personal rating.
- Characteristic prostrating attacks averaging one in two months over the last several months.10%Compare the complete criterion with documented findings; not a personal rating.
- Characteristic prostrating attacks averaging once a month over the last several months.30%Compare the complete criterion with documented findings; not a personal rating.
- Very frequent, completely prostrating and prolonged attacks productive of severe economic inadaptability.50%Compare the complete criterion with documented findings; not a personal rating.
What may happen in the exam room
- History and review of headache treatment and attack records.
- Assessment of attack duration, severity, functional effects, and occupational impact.
Measurements and findings to understand
- Attack frequency over the last several months.
- Duration and ability to perform ordinary activities during attacks.
- Documented effects on work and earning capacity.
Questions the examiner may cover
- How often do attacks occur and how long do they last?
- What activities must stop, and what can you still do?
- How have attacks affected attendance, task completion, or work arrangements?
Functional-impact language to think through
Use plain, truthful wording that matches your records and daily limitations. These examples are prompts for accuracy, not scripts.
- Describe what actually happens during an attack rather than using a percentage as a description.
- Explain recovery time, interrupted activities, and treatment response.
- Distinguish ordinary headaches from attacks that substantially prevent activity.
Common mistakes to avoid
- Assuming weekly headaches automatically meet 50%.
- Assuming one missed day of work or lying down alone establishes a level.
- Inflating an attack log to fit a cutoff.
Evidence to organize before the exam
- Dated headache log covering several months.
- Neurology and treatment records.
- Attendance, accommodation, or other occupational records when relevant.
Preparation notes
- Keep frequency, duration, severity, and work impact separate in your notes.
- Continue your prescribed treatment; do not provoke an attack for the exam.
Official rating source
38 CFR 4.124a, DC 8100. Checked 2026-09-04. Educational preparation only; not a personal rating.
How secondary service connection works
A secondary condition is not automatic. The evidence must connect a current diagnosed disability to an already service-connected condition or its medically indicated treatment.
- Basic evidence: a current diagnosis, an already service-connected primary condition, and competent evidence linking the two.
- Two theories: the primary condition or its treatment caused the new disability under 38 CFR § 3.310(a), or aggravated a pre-existing non-service-connected disability under § 3.310(b). An opinion should address both when the record raises both; causation alone may be inadequate (El-Amin).
- Treatment pathway: service-connected condition → medically indicated medication or surgery → documented adverse effect → current diagnosis. Pharmacy records, start and stop dates, and a treating clinician’s reasoning matter; medication use alone does not establish the connection.
- Weight as an intermediate step: obesity or weight gain can be part of the causal chain under VAOPGCPREC 1-2017, but obesity itself is not a disability for a VA rating.
- Standard of proof: VA applies the “at least as likely as not” standard and reasonable-doubt rule under 38 CFR § 3.102. This guide identifies evidence questions; it does not tell you what to file.
- Avoid pyramiding: 38 CFR § 4.14 prohibits rating the same manifestation twice. Mental-health diagnoses generally use one § 4.130 evaluation for the same occupational and social impairment, and insomnia may be a symptom rather than a separate disability.
- Presumptives are different: qualifying service may make chronic rhinitis, chronic sinusitis, hypertension associated with herbicide exposure, or type 2 diabetes presumptive. OSA is not a PACT Act presumptive. Check current eligibility before seeking nexus evidence for a condition the law may already presume.
- DBQ is not a nexus: a DBQ documents diagnosis and severity; it does not necessarily establish service connection. A VA-accredited VSO can help with filing strategy at no charge.
Other medically indicated treatments for a service-connected condition may support a secondary theory when a clinician documents the adverse effect in this veteran.
Sources: 38 CFR § 3.310 · 38 CFR § 4.14 · VA-accredited representatives
Possible secondary conditions to discuss with a qualified reviewer
These are educational issue-spotting notes, not medical nexus opinions. VA decides service connection.
Review only with a distinct diagnosis, individualized medical nexus, and non-duplicative impairment.
Document attack-related sleep impact; do not assume a separate sleep disability.
Photophobia or aura may be migraine manifestations. A separate eye disability requires diagnosis and evidence.