JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Insomnia. Abstract illustration of a human brain depicting insomnia. Several open eyes are seen superimposed on a starry night sky over houses and trees, within an image of the brain. Insomnia is the inability to sleep or an inability to sleep for an adequate length of time. The condition is characterised by perpetual tiredness and often irritability; one in three adults may suffer from insomnia at some time in their lives.
Model release not required. Property release not required.