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. . . PTSD, and other illness terms as well, have become a way of claiming a right to legitimate pain and misfortune. It is as if, without the illness label, their anguish wouldn't be valid, and they wouldn't be granted a passport to what Susan Sontag once called citizenship in 'the kingdom of the sick.' [However, it is] only some realms in that kingdom [that] offer a refuge from the stigma of mental illnesses: the diseases that come to us from the outside, apparently through no fault of our own, like PTSD and the enigmatic Gulf War syndrome (GWS).
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Roy Richard Grinker (Nobody's Normal: How Culture Created the Stigma of Mental Illness)