'adrenalitis' originates from New Latin, specifically the word 'adrenalis,' where 'ad-' meant 'near' and 'renalis' meant 'kidney,' combined with '-itis' indicating inflammation.

'adrenalis' transformed into the modern English word 'adrenalitis' through the addition of the suffix '-itis' to denote inflammation.

Initially, it meant 'inflammation of the adrenal glands,' and this meaning has remained consistent in modern usage.