What does the suffix 'algia' indicate in medical terminology?

The suffix 'algia' is derived from the Greek word for pain and specifically indicates the presence of pain in medical terminology. When attached to a root word, it describes a painful condition associated with that particular area or system of the body. For example, "neuralgia" signifies pain along a nerve pathway, while "myalgia" refers to muscle pain. Understanding this suffix is essential for interpreting various medical terms and conditions related to pain management and diagnosis in the healthcare setting.