A hot day can spell bad news for migraine sufferers, increasing their risk of an attack the next day, US research suggests.
The risk went up by 7.5% for every five degree Celsius increase in temperature revealed the study of more than 7,000 patients, published in Neurology.
The same applied to people who suffer from non-migraine headaches too.
Although you can't alter the weather, people can watch the forecast and pop a pill to avert attacks, the authors say
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