sairaudissa

Sairaudissa is a Finnish-looking form related to the noun sairaus, which means "disease" or "illness." In Finnish, nouns take a range of case endings to express roles such as location, possession and movement; the inessive case (ending -ssa/-ssä) commonly conveys "in" or "inside." The standard singular inessive of sairaus is sairaudessa ("in the disease"), and the regular plural inessive is sairaauksissa ("in the diseases" or "among illnesses").

As written, sairau­dissa is not the normative standard form taught in modern Finnish grammar; instances of that exact string may arise from typographical errors, nonstandard dialectal usage, transcription variants, or morphological changes in compound words. Discussion of roots and inflection highlights Finnish consonant gradation and stem alternations that produce the expected forms sairaudessa and sairaauksissa rather than sairau­dissa.

The concept expressed by the inessive forms is frequent in medical, social and literary contexts: to describe symptoms occurring within a disease, conditions "within" a pathological process, or a person living "with" an illness. Synonyms and related constructions include sairauden (genitive) and sairaana (adverbial/adjectival forms meaning "ill"). Understanding the standard inflections and their functions helps in interpreting and producing accurate Finnish in clinical, academic and everyday language.