Physically or psychologically?

In case of the drug abuser, she is psychologically addicted. She abused the drug to feel some happiness from it, instead from family. She gets rid of the stress she gained from the ignorance by abusing the drug, and she psychologically feels euphoria. However, In case of drug misuser, she is physically addicted. It is because the drug affects physically and make her sleep, not psychologically. Lastly, he gets psychologically addicted from the drug. Stimulant drug makes him to stimulate psychologically and make him to hallucinate. However, usually drug are both physically and psychologically addited.