This test rates individual symptoms of depression (such as pessimism, suicidal ideas, social withdrawal and loss of libido).

ECONOMIST: The power of negative thinking | The

This behavior is often linked to growing feelings of social withdrawal and a loss of a sense of being fully alive.

CNN: Can schoolyard bullying lead to PTSD?

The symptoms of vicarious trauma -- stress, social withdrawal, sensitization to televised violence -- are not enough to make people violent themselves, said Barbara Rothbaum, director of the Trauma and Anxiety Recovery Program at Emory Medical School.

CNN: Treating trauma victims may cause its own trauma

Some 34% of the survivors who were trapped inside the Murrah building in Oklahoma City when it was blown up came down with post-traumatic stress disorder, a disease in which patients can suffer from flashbacks, heightened anxiety and social withdrawal, according to surveys done by North.

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His new emphasis on Europe, which also includes restoring the opt-out from the social chapter, withdrawal from the European People's party, opposing the constitution and keeping the pound, is clearly aimed at Euro doubters in the country as much as his party critics.

BBC: Analysis

Either the withdrawal sickness rips the social fabric in two or the politicians short-circuit the turmoil, and the cure, by opting for pain management in lieu of detoxification and addiction maintenance instead of true recovery.

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