Yes, it's possible to have MS and dementia, such as Alzheimer's disease. Changes to the brain can be caused by both MS and Alzheimer's disease. People with relapsing-remitting MS, primary progressive MS, secondary progressive MS, and even very mild MS can go on to develop Alzheimer's disease too. Alzheimer’s disease is progressive. Its early stages are often characterized by a selective decline in memory, deficits in attention, and personality changes; its intermediate stages are marked by confusion, irritability, anxiety, and deterioration of speech; and in its advanced stages, the patient deteriorates to the point that even simple responses such as swallowing and bladder control are difficult. Alzheimer’s disease is terminal (Pinel. 2017). I have noticed in my own family that the spouses and children of Alzheimer’s patients are under tremendous strain and I highly recommend reaching out to the Alzheimer’s Society. The Alzheimer’s Society is a great support and resource for caregivers of Alzheimer’s patients.