BSIP ZARAND / SCIENCE PHOTO LIBRARY BSIP ZARAND / SCIENCE PHOTO LIBRARY
Insomnia: woman sitting up in bed. Insomnia describes a state of perpetual tiredness cause by an inability to fall asleep or to remain asleep for an adequate length of time. Insomnia may be due to physical disease, although it is more likely related to psychological or social problems, such as anxiety & alcohol or drug abuse. DAMAGED.
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