I once met a guy who HAD to lock and unlock his house a set number of times or he couldn’t go in or out. HAD to, he couldn’t remember how it started or why, but that it built up over the years and if he wasn’t very careful the process would become more and more complex and it’s mates would turn up, it was rough because the slightest mistake or distraction and he had to start again.
The rest of you are just fussy.
It’s bit like saying your Cat died, you burnt your t-shirt with the iron and you stepped in shit, your cat’s shit, which ruined your shoes and reminded you that your cat died and now you’re depressed. You’re not, you’re sad, justifiably so.
So also:
Cold / Flu
Headache / Migraine.
Not academic / Dyslexic.
On the face of it, unless you’ve suffered the symptoms seem the same, two sides of the same coin and well if you’re not feeling great say it’s the more severe version of the same thing, but they’re not, they’re not alike and they’re not related.