‘Short and self-limited’ means the course (fancy medicine word for length) of this vaccine reaction is typically less than a week (short) and the underlying pathology (fancy medical word for cause of a disease/illness/physiological abnormality) typically resolves without medical or surgical therapeutic intervention (self-limited.) The common cold, for example is usually short and self-limited. Medications can treat the symptoms (ie reduce pain or inhibit local inflammatory pathways) but don’t or can’t affect the underlying physiological process which caused the episode.
My apologies. I assumed, given the obvious confidence you display about your knowledge of this topic, that you’d be familiar with extremely basic, year one need student type medical terminology. ( assumed it was pericarditis or myocarditis as those are the most frequently reported serious mRNA vaccine side effects involving the heart for the age and gender stratum your “friend” falls under. Again, big words I know -Otis meaning inflammation of, myo- is muscle and per- is the connective lining respectively of the heart “cardo.” Please correct me if I’m mistaken in my assumptions. (We all know what “assume” means lol.)
Terrible to hear I’m off to a bad start. I’m guessing you’re some type of big cheese on this forum? In that case sorry, brother, lol. I did 13 years in the Navy before I got into medicine so didn’t think I needed to prove myself like some frat pledge to a fellow winged dude on a Naval Aviation subforum. But lmk what the pledge process is, happy to elephant walk for ya, or whatever kind of ego massage you require to feel important, boss.
I just assumed (my fault, again!) you were familiar with medicine and the medical sciences based on your frequent and self-assured missives on this topic! Believe me, I won’t make that mistake again.
Please lmk if you have additional questions about clinical vocabulary, the germ theory of disease, why wiping your ass is healthier than just trudging around with a turd in your drawers, or any other elementary medical concepts. (Google is right there, but I got really good scores on my MCAT & boards and I like to show off so also happy to help in that regard!) ? Knowledge ? is power ⚡. ✌?