Answer:
when someone is psychologically ill he/she might not have the appetite to do most of the things,even the things they used to love to do before. It's what we call it depression. A psychologically ill person is more likely to get depression and when a person gets depressed he/she might lose strength to do the simplest things such as taking a shower or brushing theeth. so psychologically ill people find it difficult to maintain high level of hygiene.