The DSM-5 defines "Mood" as:
A. An exaggerated feeling of well-being, euphoria, or elation. A person experiencing mood may describe feeling "high," ecstatic," on top of the world", or "up in the clouds".
B. An unpleasant emotion, such as sadness, anxiety, or irritability.
C. A pervasive and sustained emotion that colors the perception of the world.
D. A mental state that arises spontaneously rather than through conscious effort and is often accompanied by physiological changes.