Years ago, I regularly saw a neurologist who was treating me for chronic headaches. On one particular appointment, my doctor deviated from his usual laconic manner and asked me a few questions about my daily life. I explained that like many 40-somethings, I had a busy schedule. I worked full-time, had three kids and a husband who traveled. And by the way, my father had dementia and was going to stay with me during my mom’s recuperation from hip surgery.