Before revision: The MSLT is used extensively to test for narcolepsy , to distinguish between physical tiredness and true excessive daytime sleepiness, or to assess whether treatments for breathing disorders are working.
After revision: The MSLT is used extensively to test for disorders of excessive somnolence such as narcolepsy or idiopathic hypersomnolence , to distinguish between physical tiredness and true excessive daytime sleepiness, or to assess whether treatments for breathing disorders are working.