Which of the following are common signs of muscle strain?

Muscle strains typically occur when muscle fibers are overstretched or torn, often due to an acute injury or overuse. The common signs that indicate a muscle strain include pain, which is often localized to the affected muscle; swelling, which results from inflammation in the area; limited range of motion, as movement can exacerbate pain; and muscle spasm, as the body attempts to protect the injured muscle by tightening it.

These symptoms are directly related to the physiological response of the body to muscle strain, making them the most relevant indicators. In contrast, the other options list symptoms more associated with different conditions that do not specifically indicate a muscle strain, such as systemic or neurological issues.