Which symptom is associated with muscular pain?

Myalgia is the medical term specifically used to describe muscular pain. This terminology encompasses any discomfort, soreness, or pain that arises from muscle tissues. It can be a result of various conditions, including overuse, injury, or underlying medical issues such as infections or autoimmune diseases.

In contrast, palpitation refers to the sensation of feeling one's heart beating rapidly or irregularly, which is unrelated to muscle pain. Pallor describes a paleness of the skin often associated with anemia or circulatory issues and does not connect directly to muscle discomfort. Melena refers to the passage of dark, tarry stools due to gastrointestinal bleeding, which likewise does not pertain to muscular pain. Therefore, myalgia is the only term among the choices that directly addresses the symptom of muscular pain.