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Nervous tension immediately tightens every muscle and nerve in the body and restricts the normal action and free and rhythmic flow of the various circulations. It holds the poisons in the body preventing their free exudation and by their presence creates more poisons.
distress or uneasiness of mind caused by fear of danger or misfortune: He felt anxiety about the possible loss of his job. earnest but tense desire; eagerness: He had a keen anxiety to succeed in his work. Psychiatry. a state of apprehension and psychic tension occurring in some forms of mental disorder.