Shalaft's Syndrome

Shalaft's Syndrome was an extremely rare human illness that causes hypersensitivity to sound. Genetically, all the male members of a family would have it. Jean-Luc Picard had the condition but had it treated. Shinzon also had the condition although it took many years before it was diagnosed and treated. In 2379, Beverly Crusher used Shinzon's possession of the syndrome as a factor in determining that the Praetor of the Romulan Star Empire was indeed a clone of Picard.