Insomnia is the perception or complaint of inadequate or poor-quality sleep because of one or more of the following: 1) difficulty falling asleep 2) waking up frequently during the night with difficulty returning to sleep 3) waking up too early in the morning unrefreshing sleep Insomnia is not defined by the number of hours of sleep a person gets or how long it takes to fall asleep. Individuals vary normally in their need for, and their satisfaction with, sleep. Insomnia may cause prob...

Alcoholism is an addictive dependency on alcohol characterised by craving (a strong need to drink); loss of control (being unable to stop); physical dependence and withdrawal symptoms; and tolerance (increasing difficulty of becoming drunk). The causes for alcohol abuse and dependence can not be easily explained. It is often seen as a "disease of affluence," being uncommon among indigenous people until they were colonized. Today, alcohol abuse and alcoholism are a major public health problem ...