Posibleng Mga Sanhi para sa Hypersomnia Depresyon Endogenous Depression Chronic Alcoholism Hika Traumatic Brain Injury Sleep Apnea Chronic na Fatigue Syndrome Primary Progressive Multiple Sclerosis Epilepsy Parkinson's Disease Muscular Dystrophy Psychosis Glomerulonephritis Bipolar Disorder Encephalitis Multiple Sclerosis Pagpalya ng Bato Diabetes Insipidus Hypersomnia Parasomnia Dursun Syndrome Narcolepsy Narcolepsy-Cataplexy Syndrome Myotonic Dystrophy Prader-Willi Syndrome Sakit sa Puso West African Trypanosomiasis Matinding Depressive Episode Pagkawala, Kalungkuta at Pagkalumbay Pinsala sa Ulo
