Abstract:
Kleine–Levin syndrome (KLS) is an intriguing, severe, homogenous disease, with well defined clinical
features, but no clear cause or treatment. Therefore studies on KLS were done exclusively with case
report or series. There are limited systemic study comparing KLS with controls on phenomenology,
cause, investigations and management. We report four cases of KLS presented to us along with core
symptoms, hypomanic and catatonic features. Response to treatment also different with one case
responded to lithium while others required combination of therapy. KLS is still evolving disorder
having cluster of varying symptoms and response to treatment. This needs further exploration and
higher studies
