What is the meaning of the suffix "itis" in medical terms?

The suffix "itis" is a common term used in medical terminology that specifically denotes inflammation. When you see "itis" attached to a word, it indicates that there is an inflammatory process occurring in the affected area or structure of the body. For example, "appendicitis" refers to the inflammation of the appendix, while "dermatitis" refers to inflammation of the skin. This indication of inflammation is critical for healthcare professionals to understand because it helps to identify the nature and possible causes of various medical conditions.

Understanding this suffix is essential for interpreting medical terminology accurately, which can guide diagnosis and treatment options. The other options provided do not accurately capture the meaning of "itis," with "infection" referring to the invasion of pathogenic organisms, "disease" being a broader term that encompasses various health conditions, and "excessive condition" not aligning with the standard use of "itis" in medical language.