Thank you for posting your query.
I have noted the symptoms of your mother in law.
She has features of dementia
, most likely caused by Alzheimer's disease (AD). AD is a condition, where there is cerebral atrophy
(shrinkage of brain), leading to loss of brain functions, including memory.
The exact cause is not known, however, it is a degenerative disease.
As of now, there is no cure for AD. However, with proper care and nursing, life expectancy can be almost normal.
I hope my answer helps. Please get back if you have any follow up queries or if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
My BLOG: http://bestneurodoctor.blogspot.in