There are different types of stress, but in the end, all stress can eventually have negative effects on the body.

One of them might be the posttraumatic stress

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.

wellness is an overall state of well-being. the quality or state of being healthy in body and mind, especially as the result of deliberate effort