probably a heat rash
from the break.
It could be a bug bite,or a infected hair folical.
A red bump on your arm that is growing could indicate several things, such as an insect bite, an allergic reaction, or an infection. It might also be a sign of a skin condition like a cyst or a dermatological issue. If the bump is painful, shows signs of infection (like pus or increased redness), or continues to grow, it's best to consult a healthcare professional for an accurate diagnosis and appropriate treatment.
pain and a bump under your arm is breast cancer. get it checked right away!
what does it mean when pimple like bump is in uterus
digs, set up, spike, over arm and under arm ,serving
arm y it mean arm
no its not but if it does not go away in a few days then consult your vet
what does it mean if you have a bump on your head
Bump
arm y it mean arm