[Isolated trigeminal neuropathy revealing the presence of Sharp's syndrome or MCTD (mixed connective tissue disease) (author's transl)].

Isolated neuropathies of 5th cranial nerves are rare apart from primary facial neuralgia. A case is reported, in which Raynaud's syndrome was also present, that enabled a diagnosis of mixed connective tissue disease to be established. The authors underline the importance of undertaking complete immunological investigations in order to decide whether there is a particular type of systemic disease present, which could be responsible for these special types of trigeminal nerve disorders.