What does the suffix "-itis" indicate in medical terminology?

The suffix "-itis" is commonly used in medical terminology to denote inflammation. It is derived from the Greek word for inflammation and is typically applied to a variety of conditions that involve swelling or irritation of tissues. For example, in terms like arthritis (inflammation of the joints) and hepatitis (inflammation of the liver), the suffix signifies that there is an inflammatory process occurring. This inflammation can result from various causes, including infections, autoimmune responses, or physical injuries, making it a crucial term in diagnosing and discussing various medical conditions.

The other options refer to different concepts in medicine and therefore do not fit with the definition provided by "-itis." Understanding this suffix helps in identifying and comprehending various medical conditions encountered in clinical practice.