Which of the following is a symptom of a manic episode in bipolar disorder?

A symptom of a manic episode in bipolar disorder is characterized by behaviors and symptoms that indicate heightened mood, energy, or activity. Loud and uninterrupted speech is a classic symptom of mania, often referred to as "pressured speech." During a manic episode, individuals may feel an overwhelming sense of euphoria or irritability, leading them to talk rapidly and freely without regard for the listener’s responses. This symptom reflects the increased energy and impulsivity often seen in this phase of bipolar disorder, as individuals may jump from one topic to another while interrupting themselves.

In contrast, excessive fear, intrusive thoughts, and chest pain do not align with the core symptoms of a manic episode. Excessive fear is more often associated with anxiety disorders, while intrusive thoughts can occur in various mental health conditions, including obsessive-compulsive disorder. Chest pain is typically related to anxiety, panic attacks, or medical issues, rather than being a symptom of mania. Thus, loud and uninterrupted speech is indeed indicative of a manic episode and highlights the distinct manifestations of bipolar disorder.