bursitis

This term is a clinical diagnosis used primarily in medical contexts to describe the inflammation of the synovial sacs that protect joints. It carries a neutral, descriptive tone and is typically used by healthcare professionals or patients discussing a specific pathology.

As a medical condition referring to a specific state of inflammation, the word is uncountable. It does not have a plural form in standard usage, as it describes a condition rather than a discrete object that can be counted.