Toxic Dementia

My mother (82) days of a perfectly lucid works normally, and other days being confused, not knowing what day it is, which way to turn a key into a lock, etc is always dementia gradually a state periods without deterioration normalitry?
May cause constipation chronic toxic effects on the accumulation of the mind?
Thank you to Neil

It is quite normal for dementia, there are days they seem perfectlly normal and the other, really confused. Sorry, there are worse, but drugs. therefor. Chronic constipation is a serious problem, you can use diflocan a pill, or Mira lake can be put in a drink like coffee or tea, it has no taste. who will take care of constipation. You are very kind to care so much. My grandmother had dementia, and he is very lucky challenge.good

Absolutely!

Take the doctor might have had a stroke.