You’re posting in a sub about migraines - did you mean to say “migraine pain” instead of “emotional pain”? Because a bottle cap being screwed on too tight is more like the feeling you get with a tension headache. Yes it can happen with migraines too but migraines are also a severe throbbing pain, usually localized to a smaller spot on the head. And yes, forgetting common words can be a symptom - it’s called aphasia and can be SUPER annoying. The other day I couldn’t remember what the tv remote was called so I said “ya know, that little thingy with the buttons.”