Table 4 Appendix 2 Diagnostic criteria for migraine

A. At least five attacks fulfilling criteria B-D

B. Headache attacks lasting 4-72 hr (untreated or unsuccessfully treated)

C. Headache has at least two of the following four characteristics:

1. Unilateral location

2. Pulsating quality

3. Moderate or severe pain intensity

4. Aggravation by or causing avoidance of routine physical activity (eg walking or climbing stairs)

D. During headache at least one of the following:

Nausea and/or vomiting

Photophobia and phonophobia

E. Not better accounted for by another ICHD-3 diagnosis.

A. At least two attacks fulfilling criteria B and C

B. One or more of the following fully reversible aura symptoms:

1. Visual

2. Sensory

3. Speech and/or language

4. Motor

5. Brainstem

6. Retinal

C. At least three of the following six characteristics:

1. At least one aura symptom spreads gradually over ≥5 minutes

2. Two or more aura symptoms occur in succession

3. Each individual aura symptom lasts 5-60 minutes

4. At least one aura symptom is unilateral

5. At least one aura symptom is positive

6. The aura is accompanied, or followed within 60 minutes, by headache

D. Not better accounted for by another ICHD-3 diagnosis.

A. Headache (migraine-like or tension-type-like) on ≥15 days/month for >3 months, and fulfilling criteria B and C

B. Occurring in a patient who has had at least five attacks fulfilling criteria B-D for ‘1.1 Migraine without aura' and/or criteria B and C for ‘1.2 Migraine with aura'

C. On ≥8 days/month for >3 months, fulfilling any of the following:

1. Criteria C and D for ‘1.1 Migraine without aura'

2. Criteria B and C for ‘1.2 Migraine with aura'

3. Believed by the patient to be migraine at onset and relieved by a triptan or ergot derivative

D. Not better accounted for by another ICHD-3 diagnosis.

Screening question

During the last three months, have you ever had any of the following symptoms with your headache?

1. Do you feel nauseous or sick to your stomach when you have a headache?

2. Does the light bother you when you have a headache?

3. Has your headache ever limited your ability to work, study or our activities for a day?

Answering ‘yes' to two or more of these questions, patient is positive to have migraine with a sensitivity of 0.81, a specificity of 0.75 and positive predictive value of 0.93.

“Key: * = The diagnostic criteria by ICHD-3 ** = The screening questions for migraine diagnosis from the ID-migraine validation study by Lipton et al, 2003”