ärrituste
ärrituste is the genitive plural form of the Estonian noun ärritus, which translates to irritation in English. Ärritus refers to a state of irritation, either physical (such as skin or mucous membrane irritation) or emotional (annoyance or nuisance). The related verb ärritama means to irritate or to annoy. The genitive plural ärrituste is used when describing the relationship as “of irritations” or when another noun is governed in a possessive sense, for example in phrases like naha ärrituste ravi (treatment of skin irritations) or ärrituste allikas (source of irritations).
In medical and dermatological contexts, ärritus can denote localized skin irritation, redness, itching, or a reaction
Linguistically, ärritus belongs to a family of Estonian words formed with the root ärrit- related to irritation
In summary, ärrituste denotes “of irritations” within Estonian, arising from the same root as ärritus and ärritama,