An affix is a morpheme that is attached to a word stem to form a new word. Affixes may be derivation , like English -ness and pre-, or inflectional, like English plural -s and past tense -ed.... -itis is typically used to denote an inflammation
Inflammation
Inflammation is the complex biological response of Blood vessel tissues to harmful stimuli, such as pathogens, damaged cells, or irritants. It is a protective attempt by the organism to remove the injurious stimuli as well as initiate the healing process for the tissue.... in English and various other languages.
The suffix is also used colloquially to denote any type of disease, including imagined disease such as senioritis
Senioritis
Senioritis, from the word senior plus the suffix -itis , is a colloquial term used in the United States to describe the decreased motivation toward studies displayed by students who are nearing the end of their high school or college careers.... , or real injuries like wiiitis, even if the supposed disease does not involve an infection.
See Wiktionary:-itis for the list of words ending with itis.
