My wife and I spent the better part of 15 years caring for her parents, both of whom struggled with dementia. This is part two of a 10-part series that will introduce you to Arthur and Barbara and our family’s journey. Our goal is to share our triumphs and challenges to help others.

The first time we noticed something was amiss with Barbara was two years prior to her diagnosis with Alzheimer’s. My wife and I were expected to receive an important letter that was mistakenly forwarded to my in-l...