To prevent sore arms, move your limbs as much as possible after getting the vaccine. For flu-like symptoms, hydration is key. Visit Insider's homepage for more stories. As more Americans schedule ...

Five-year-old Bonnie was rushed to the hospital by her parents when they noticed an odd lump on her left arm. Doctors told them it was just a sprain and sent her home with her arm in a sling. Two ...

Pretty much everyone and their mom is waiting eagerly to hear that it's their turn to get the COVID vaccine —but the reality that it's an actual shot isn't super fun. After you breathe through the ...

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it can ...

Feeling sore after a workout is known as delayed onset muscle soreness (DOMS). Sore muscles after exercise are a result of muscle breakdown during a workout, particularly on the eccentric portion or ...

For years, Gary Ruane II experienced tingling in his hands and arms. Doctors eventually ruled out carpal tunnel syndrome and thought something in his neck contributed to his loss of sensation. After a ...