Here are two presentations that provide an introduction to dementia: A one-page note in English, and a longer introduction in Hindi.
English one-page note: Sometimes we need to give people a quick and compact introduction on dementia. A one-page document intended for such a situation can be viewed on Slideshare at: Introduction to Dementia Opens in new window or viewed in the player below.
A Hindi presentation including graphics: This provides an introduction to dementia, its symptoms, types, impact, care, etc., is available on Slideshare. View it directly on Slideshare at: What is Dementia (डिमेंशिया क्या है?) Opens in new window or in the viewer below.