[A case of Raeder syndrome in a patient with known multiple sclerosis].

In 1918 the Norwegian neurologist Raeder was the first to describe a syndrome consisting of unilateral headache, facial pain and a Horner's syndrome which is incomplete; this syndrome is accompanied by multiple parasellar cranial nerve involvement. This syndrome was named "Raeder's syndrome" or paratrigeminal syndrome. A survey of the literature concerning "Raeder's syndrome" is given; there a two varieties of Raeder's syndrome, the migrainous or reflex type and the symptomatic type with multiple parasellar cranial nerve involvement. The first variety has a close relationship to cluster headache and to the so-called pericarotid syndrome. A case of an own patient suffering from multiple sclerosis and a migrainous type of Raeder's syndrome is described, assuming that his basic disease MS is independent of his Raeder's syndrome.