If it walks like a duck and quacks like a duck... Over ten years ago I went through a long series of tests, bloodwork, examinations, all to conclude that I had lupus. Some may know that often lupus is a diagnosis of last resort, meaning that if doctors cannot find any other reason for why you feel like crap, and you lack (blessedly) the telltale butterfly mark over your nose, and you have chest pain (it was pericarditis) but your heart is fine (again, blessedly), then it must be lupus. In the same way I *could* spend the money and time to get officially diagnosed with ADHD, but like I said, if it walks like a duck and quacks like a duck. Also, I'm old, retired, so it's not like I would function better at work or school. I joined the 4th cohort, because I want to spend my last years with intention, success, fulfillment, and even influence. Decades ago someone told me, it's not how you start, it's how you finish. So I'm going with that.