Neuralgic amyotrophy (Parsonage-Turner syndrome): an often misdiagnosed diagnosis.

Neuralgic amyotrophy (Parsonage-Turner syndrome) is an idiopathic brachial plexus neuritis which commonly affects the upper trunks. Since the first description during World War II there have been multiple reports highlighting the manifestations of this syndrome. The clinical presentation may be individual mononeuropathy, multiple mononeuropathies or involvement of a single trunk, most commonly the upper trunk have all been reported as presentations or neuralgic amyotrophy. We report 4 cases of neuralgic amyotrophy presenting to the electrodiagnostic laboratory at the Aga Khan University within the past 2 months. We re-emphasize the varied presentation, including diaphragmatic paresis in one patient. We also question the pathologic localization of this entity, as our experience does not support a brachial plexus origin.