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.

Fibromyalgia, a real puzzle of modern medicine
Fibromyalgia syndrome, more commonly known as fibromyalgia, represents a real enigma, as recently pointed out by some authors (Häuser et al, 2019). Over the past three decades, the acceptance, although







































































