I always use the pregnancy analogy. Maybe you have morning sickness sometimes and crave certain foods, but that doesn’t mean you are pregnant. You either have a baby in you or you don’t.

Edit: crave, not crazy

Oh my god I use this SAME EXACT analogy

Like we all zone out, we all forget something or draw a blank, we all have to write stuff down, we all sometimes get super interested or excited about a topic, it’s called being a person

However for you it’s not creating a scenario where those are impeding your lives regularly and j say regularly because I’m sure someone has lost a job or something over forgetting something even tho our example person normally has good memory

Idk I kinda lost my train of thought near the end

I compare it to PTSD. You can have post-traumatic stress after a car crash. It does not mean it's a disorder unless it has been causing difficulties for an extender period of time

It's not as good of an analogy as the ones other have provided, but it works for me!