Greater auricular nerve conduction in leprosy.

Greater auricular sensory nerve conduction was performed in 18 'control' subjects (36 nerves) and normal values for various parameters were determined. In 10 (16 nerves) of the 12 (24 nerves) leprosy patients in whom similar study was performed, abnormal conduction was found. All the eight thickened nerves and 8 of 16 clinically normal nerves in leprosy patients were found to have electrophysiological abnormalities. The usefulness of this procedure in the diagnosis of leprosy is emphasised.