In the present investigation an attempt has been made to categorize the Neurological Sleep Disorder with its etiology and clinical management. Different type of sleep disorders like were studied. The metabolism of Dopamine and Noradrenaline/Norepinephrine, mutation of DAT1 and D4 receptor in the patients of ADHD was investigated from the literature sources. Study of the Rapid Eye Moment (REM) during sleep cycle and lack of secretion of Hypocretin from hypothalamus of the brain is majorly considered reason for narcolepsy. CPAP therapy, electrocardiography during sleep studies of patients, heart rate monetarization in Non-Rapid Eye Movement (NREM) and Rapid Eye Movement (REM) during sleep cycle are the major modern techniques we use for diagnosis of sleep apnea. These techniques have zero side effect as compared to other drugs we involve for the treatment of a particular disorder.