Facial pain as first manifestation of anti-Hu paraneoplastic syndrome.

The diagnosis of anti-Hu-associated encephalomyelitis/sensory neuropathy may be particularly difficult when cranial nerve involvement represents the first clinical manifestation of the disease. We report a case of a patient who presented with facial pain as the first manifestation of an anti-Hu paraneoplastic syndrome, which needs a rapid detection and treatment of the underlying tumour. We suggest that paraneoplastic neuropathy should be considered during the management of trigeminal neuropathic pain, especially when brain imagery is normal.