Kezelésben
Kezelésben is a Hungarian locative form derived from the noun kezelés (treatment). It expresses being inside or within a treatment process, equivalent to the English phrase "in treatment." The form is created by adding the suffix -ben to the noun, following standard Hungarian vowel harmony (kezelés + ben = kezelésben). It is typically used in medical, therapeutic, or rehabilitative contexts to indicate that someone or something is currently under treatment or participating in a treatment regime.
In usage, kezelésben commonly appears with verbs or phrases that denote participation in or receipt of care.
Kezelésben can also form participial phrases, such as kezelésben részesülő, meaning “in treatment” or “receiving treatment,”