Hello @Ss72 and welcome to the forum. I am sorry to read about your dad's recent diagnosis. Dementia is an umbrella term for over 100 different types of dementia of which Alzheimer's is the most common. I have attached a couple of links which you might find useful. After you have read them please come back with any questions that you might have.
Alzheimer’s disease is a physical illness which damages a person’s brain. This eventually causes dementia. Alzheimer’s disease is the most common cause of dementia.
Find out how to get a dementia diagnosis and why it can help you access the right support. Diagnosis stages are different for everyone and we can offer advice and a symptoms checklist to help you speak to your doctor.
There’s a lot to think about if you find out you have dementia. Our advice explains what happens immediately after you're told, and how to access support.