These symptoms are called "B symptoms" and are nonspecific and more consistent with infection instead of a malignant disease.

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Schuchat noted swine flu symptoms are relatively general and nonspecific.

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People with nonspecific-type thoracic outlet syndrome have chronic pain in the area of the thoracic outlet that worsens with activity, but the specific cause of the pain can't be determined.

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It's a little general -- general and somewhat nonspecific.

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"The symptoms of ADHD are very nonspecific, " she says.

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