Table 1 Location of migraine pain at onset and subsequent evolution during established headaches in children and adults. (in >50% occasions)

A. Unilateral

41 (20.5%)*

331 (41.38%)* P < 0.001

 1. Ocular

11 (26.8%)

176 (53.17%)

a. Remained same

6 (54.5%)

81 (46%)

b. Hemicranial

1 (9.1%)*

65 (36.9%)* P < 0.001

c. Bilateral/holocranial

4 (36.4%)*

30 (17.0%)* P < 0.001

 2. Frontal

25 (60.98%)

27 (8.16%)

a. Remained same

7 (28.0%)

8 (29.6%)

b. Hemicranial

4 (16.0%)

4 (14.8%)

c. Bilateral/holocranial

14 (56.0%)

15 (55.5%)

 3. Temporal

5 (12.2%)

128 (38.67%)

a. Remained same

Nil

68 (53.1%)

b. Hemicranial

3 (60%)

40 (31.3%)

c. Bilateral/holocranial

2 (40%)

20 (15.6%)

 Side locked

None*

105 (31.72%)* P < 0.001

B. Bilateral/central

66 (33%)

258 (32.25%)

 1. Bilateral ocular

18 (27.3%)

36 (13.96%)

a. Remained same

11 (61.1%)

25 (69.4%)

b. Holocranial

7 (38.9%)

11 (30.6%)

 2. Bifrontal

37 (56.1%)

18 (6.97%)

a. Remained same

8 (72.7%)

8 (44.4%)

b. Holocranial

3 (27.3%)

10 (55.5%)

 3. Bitemporal

11 (16.6%)

132 (51.16%)

a. Remained same

8 (72.7%)

92 (69.7%)

b. Holocranial

3 (27.3%)

40 (30.3%)

 4. Vertex

Nil*

72 (27.91%)* P < 0.001

a. Remained same

b. Hemicranial

c. Bilateral/holocranial

C. Occipito-cervical

23 (11.5%)*

211 (26.38%)* P < 0.001

a. Remained same

6 (26.1%)

75 (35.55%)*

b. Hemicranial

Nil*

49 (23.22%)*

c. Bilateral/holocranial

17 (73.9%)

87 (41.23%)

D. Holocranial

70 (35%)*

Nil* P < 0.001