What is the Cause of KLS?
The cause of Kleine-Levin Syndrome (KLS) is still unknown. Some theories suggest that KLS could be caused by a viral or bacterial component while others explore the possibility of a genetic suscetibility to KLS. There are also those who believe that KLS may be affected by the immune system. It is possible that the illness is caused by a combination of factors. The following is a link to the KLS foundation Status of KLS Research at Stanford University: