Today's theme is "cognitive impairment." If young people show symptoms, there may be depression, schizophrenia, or some other condition below the surface...?!
I'm sorry. His dementia 
has gotten worse lately...
...أنا آسفة، خرَفه قد زاد سوءاً مؤخراً
Tut mir leid, seine Demenz
wurde in letzte Zeit etwas schlimmer …
Pardonnez-le,
sa sénilité a un peu empiré.
Mi dispiace. 
La sua demenza sta peggiorando.
Desculpe. A demência dele 
tem piorado ultimamente...