Final answer:
Psychological dependence is the correct answer, indicating an emotional need for a drug and resulting in mood and emotional withdrawal symptoms upon cessation. It differs from physical dependence, which causes physical symptoms, and tolerance, which is the need for increasing amounts of a substance to achieve the same effect.
Step-by-step explanation:
The condition that leads to psychological withdrawal symptoms, such as mood and emotional changes, is Psychological dependence. This type of dependence refers to an emotional, rather than a physical, need for a drug. Psychological dependence may develop when an individual uses a substance to relieve psychological distress. Withdrawal symptoms associated with psychological dependence are typically emotional or cognitive in nature, including anxiety, irritability, cravings, or depression. Unlike physical dependence, which is characterized by physical withdrawal symptoms when drug use ceases, psychological dependence is about the mental and emotional state of the user.
Furthermore, tolerance can often accompany dependence, wherein the user needs to increase the dosage of a drug to achieve the same effects. Tolerance is indicative of physiological changes in the body's response to the drug, and while it can sometimes be a component of dependence, it is a separate phenomenon. Both physical and psychological dependencies are key components in substance addiction, where an individual compulsively uses a drug despite negative consequences.