How is cephalgia commonly experienced?

Cephalgia, which is a medical term for headache, is primarily experienced as pain localized in the head. This type of pain can take various forms, such as throbbing, sharp, or dull sensations, but it is fundamentally associated with the head region. Understanding this definition helps recognize that headaches can also vary in intensity and character, depending on their type (e.g., tension, migraine, cluster), but they consistently involve pain in the head area.

The other options describe symptoms or discomforts that are not consistent with cephalgia. Discomfort in the back, tightness in the chest, and sensations in the limbs do not pertain to headaches and instead may relate to other medical conditions. Thus, identifying cephalgia as pain in the head solidifies its specific medical classification and helps in the proper assessment and treatment of individuals experiencing this symptom.