What suffix indicates a condition of pain?

The suffix that indicates a condition of pain is -algia. This suffix comes from the Greek word "algos," which translates to pain. It is commonly used in medical terminology to specify types of pain associated with different body parts or conditions. For instance, in the term "neuralgia," it signifies pain related to the nerves. Understanding this suffix helps medical professionals accurately describe and diagnose conditions related to pain, providing clearer communication about patient symptoms and needs.

The other suffixes listed have different meanings: -ia generally refers to a state or condition that is not specifically related to pain; -itis denotes inflammation, which can be painful but is primarily an indication of an inflammatory process; and -osis indicates a condition or abnormal increase of something, often indicating a disease process without directly implying pain.