[Bilateral isolated trigeminal neuropathy (author's transl)].

Spillane and Wells (1959) were the first to describe the syndrome known as isolated trigeminal neuropathy in which deficit in the trigeminal nerve occurs either unilaterally or bilaterally without evidence of any local lesion. It may be a truly isolated disorder but can also be the predominant element of a more diffuse neuropathy provoking, more particularly, ageusia and anosmia. The bilateral forms are fairly frequently related to connective tissue diseases but many are of unknown aetiology. A case is reported of the bilateral form with ageusia and anosmia, cubital deficit, and slowing of the conduction rate in the limbs. No aetiology was found.