No one likes to be poked with a needle, whether for a vaccine or a blood draw. But for children, getting a shot at the doctor's office can be frightening and lead to some emotional outbursts.

An estimated 25% of Americans have a fear of needles and 16% skip getting vaccines because of that fear, according to Harvard Medical School. Sometimes trypanophobia stems from a traumatic childhood ...

Chemotherapy infusions. Hemodialysis for kidney failure. Diabetes insulin injections. If you have a chronic illness, it can feel like every potentially lifesaving test or treatment requires a needle.