Not everyone is happy with energy saving lightbulbs. Some are unhappy with the illumination delay that happens before they reach an optimum light coverage. Now migraine sufferers are warning that they can, in some cases trigger migraine attacks.
The technology is similar to that used in fluorescent strip tubes which many people, not just known migraine sufferers, often complain about when working under them for long periods due to the frequency at which they flicker.
One epilepsy charity has already reported that energy saving light bulbs can trigger seizures in some epileptics.