The idea that small causes may have large effects, describes the phenomenon known largely as "the butterfly effect", And so it does apply to a "butterfly needle" too.

From the doctor's perspective, a butterfly needle, also known as winged infusion set, are considerably less painful when injected, and more flexible to withstand movement from a patient's muscles, contrary to usual needles. That sounds minor, right?

Whatever your answer may be. There is one fact that stays all the same...
It's still an injection!

This is a story about such details that remains to be untold, in a diary-like narrative.

Hope you can enjoy it, as much as it's originally intended. see you again in the afterwords.