[Klippel-Feil syndrome, a rare cervicalgia].

Cervicalgia is defined as the presence of pain in the neck region, and can radiate to the shoulders, upper limbs or back. It is a source of frequent visits to Primary Care, and more than half of the general population will suffer neck pain at some point in their life. Klippel-Feil syndrome is an exceptional cause of cervicalgia. It belongs to the group of so-called malformations of the hold-down skull-cervical congenital disease. Klippel-Feil syndrome is a complex disease entity characterized by the fusion of two or more vertebrae, and may also be associated with other bone and visceral disorders. The characteristic clinical triad consists of short-neck, implantation below the hair in the occipital region, and limitation of cervical mobility. However, this clinical picture is present in less than 50% of these patients.