Table 3 Incidence of triggers in prospective study (at 3 months) N = 186 No. of migraine spells = 1,563 (i.e. 2.8 Spells/subject/month)
From: Trigger factors in childhood migraine: a clinic-based study from Eastern India
Trigger | Migraine spells n = 1,563 | % |
|---|---|---|
A. Environmental/climatic | ||
1. Sunlight | 1,312 | 83.9 |
2. Hot and humid climate | 1,325 | 84.8 |
3. Cold (air conditioner) | 0 | 0 |
4. Noise | ||
(a) Environmental | 1,085 | 69.4 |
(b) Loud speakers/loud music | 924 | 59.1 |
5. Smoke | ||
(a) Auto emission | 570 | 36.5 |
(b) Cigarettes | 12 | 0.77 |
6. Crowded place | 850 | 54.4 |
B. Visual stimuli | ||
1. School book reading | 588 | 37.6 |
2. Recreational reading | 92 | 5.9 |
3. Bright light (other than sun) | 290 | 18.6 |
4. TV watching | 71 | 4.5 |
C. Stresses | ||
1. School stress | 1,390 | 88.9 |
2. Extracurricular activity related | 185 | 11.8 |
3. Family stress | 224 | 14.3 |
4. Bereavement | 0 | 0 |
D Physical exercise | 182 | 11.6 |
E. Dietary | ||
1. Missing meals | 210 | 13.4 |
2. Religious fasting* | 3 | 0.2 |
3. Dark chocolate | 2 | 0.13 |
4. Pizza | 0 | 0 |
5. Chinese food | 5 | 0.32 |
6. Caffeinated drinks | 0 | 0 |
F. Car/bus journeys (other than school) | 3 | 0.2 |
G. Behavioral | ||
1. Shouting | 215 | 13.8 |
2. Being scolded | 51 | 3.3 |
H. Hormonal | ||
1. Menstruation* | 7 | 2.4 |
N = 288 | ||
I. Others | ||
(Perfumes, head trauma, GI upset) | 2 | 0.13 |
Number of school days lost: 440 (i.e. 0.8 days/subject/month) | ||