Arthralgia and neurologic deficit. A differential diagnostic review

The diagnostic classification of arthralgia and non-characteristic neurological deficit is a challenge for the neurologist and the internist if both symptoms arise simultaneously or in combination. Diseases with the combined appearance of both symptoms are grouped into those with early and more or less simultaneous onset, those starting with arthralgias followed by neurological deficits, neurogenic arthropathies, and those presenting both symptoms as complications of ongoing internal disease. A diagnostic procedure is set out and recommended.