What does 'algia' typically denote when used in medical terminology?

The term 'algia' in medical terminology specifically refers to pain. It is derived from the Greek word 'algos,' which translates to pain. This suffix is commonly used in various medical terms to describe specific types of pain associated with different conditions or parts of the body. For instance, "neuralgia" indicates pain related to the nerves, while "myalgia" refers to muscle pain. Understanding this suffix is crucial in the medical field, as it helps healthcare providers accurately communicate about a patient's condition and symptoms. The other options do not relate to the meaning of 'algia'; weakness, heat, and injury have distinct medical terms that do not include this specific suffix.