
The Conversation | Y Golub/ Shutterstock
Dementia is an umbrella term. There are estimated to be more than 100 types of dementia. Alzheimer’s disease is the most common subtype of dementia, affecting approximately 60% of all cases. Memory loss in one of the most common symptoms of this type of dementia. But approximately 40% of all dementia cases are considered to be different, rarer types. Unfortunately, having a rarer subtype of dementia often makes diagnosis more difficult and requires more complex care.