"Adjustment problems" refers to difficulties or challenges that arise when someone has trouble adapting or getting used to a new situation or change in their life. Full definition
The severity and spread of adjustment problems of adolescents involved in mutually hostile interactions with others. (cambridge.org)
There were no reported increases in behavioral adjustment problems in the present sample. (link.springer.com)
In fact, among families high on conflict, divorced families, and «normal» families, the married and in conflict families showed more child adjustment problems than the divorced families. (psychpage.com)