Cluster headache causes a sharp pain at the temple or around the eye, on one side of the head only, that lasts for a fairly short period of time (usually 30 minutes to 1 hour). Headache usually occurs regularly for a period of 1 to 3 months, followed by an asymptomatic period of months or years.

The extra hour of daylight: what the experts say
Standard time is advisable because it is more natural and suitable for people's daily lives; it is in practice better suited to reduce mental and physical stress.








































































