Which symptoms are negative effects of performance-enhancing drugs? Select all that apply.

Performance-enhancing drugs can have a range of negative effects on the body, and mood swings are a notable symptom associated with their use. These drugs, particularly anabolic steroids, can lead to significant changes in mood and behavior. Users may experience increased aggression, irritability, and severe mood fluctuations, often referred to as "roid rage." This psychological impact is linked to alterations in brain chemistry caused by these substances.

While the other symptoms listed are also potential negative effects of performance-enhancing drugs, mood swings are particularly associated with the psychological side effects that can have profound implications on a user's mental health and social interactions. For instance, infections can occur as a result of unsanitary injection practices, vomiting may happen due to body rejection of the substances, and liver damage is a well-documented risk related to long-term use, particularly of oral steroid forms. However, mood swings encapsulate the psychological turmoil that can directly affect daily life, making them a critical symptom of concern.