What does the suffix '-algia' signify in medical terminology?

The suffix '-algia' is used in medical terminology to indicate a condition of pain. It derives from the Greek word "algos," which translates to pain or discomfort. When this suffix is added to a root word, it typically specifies the location or type of pain, such as "neuralgia" (nerve pain) or "myalgia" (muscle pain). This makes it an essential term in medicine, as identifying and describing pain is a key part of diagnosing and treating various health conditions.

In contrast, the other options represent different medical concepts. Abnormal hardening is denoted by the suffix '-sclerosis,' abnormal narrowing is indicated by '-stenosis,' and the death of tissue is referred to with the suffix '-necrosis.' Each of these suffixes highlights specific pathologies that are distinct from the general condition of pain signified by '-algia.'