The Gradual Decline in Memory and Problem-Solving

This page is the CodyCross answer for the clue below from Fantasy World , Group 865, Puzzle 4 (Gatekeepers).

Question is: The Gradual Decline in Memory and Problem-Solving

and the answer is: DEMENTIA

Word Meaning:

DEMENTIA — (pathology) A progressive decline in cognitive function due to damage or disease in the brain beyond what might be expected from normal aging. Areas particularly affected include memory, attention, judgement, language and problem solving.

Definitions from Wiktionary.