use behaviors in the future.

Signs and symptoms

Symptoms for a substance use disorder include behavioral, physical and social changes. Changes in behavior include being absent from school or work; changes in appetite or sleep patterns; personality and attitude changes; mood swings, and anxiety. Signs include physical changes such as weight gain or loss; tremors, and bloodshot eyes. Different substances used can give different signs and symptoms.

There are a number of psychological changes associated with substance use

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