It is typical during initial post-trauma weeks to have difficulty sleeping, eating or focusing on other things.

WSJ: First Responders Seek Out Counseling as Attitudes Shift

Have you observed possible signs of pain in your infant or toddler, such as ear pulling, difficulty sleeping or unusual irritability?

CNN: Ear infection (middle ear)

In the traditional way of tragic heroes, Lorimer has difficulty sleeping.

ECONOMIST: New fiction

Another study of 119 cancer patients with difficulty sleeping found valerian before bedtime for two months had no significant effect on sleep scores calculated from a questionnaire filled out before the study and after two months.

WSJ: Can a Root Get to the Problem of Insomnia?

Colin Harmer, 60, from Littlemoor, Weymouth, said he has difficulty sleeping and often takes his dog for a walk in the early hours, but said this had become increasingly difficult since the lights had been switched off.

BBC: Councillor Robert Gould, from Dorset County Council

In the latest survey, 42 percent reported depression, 21 percent difficulty concentrating and 18 percent trouble sleeping.

CNN: Survey: Shock from terror attacks receding