Damage to any nerve in your body can have unexpected results. In some cases, damage to a nerve can cause you to lose a muscle reflex, like the one that makes your knee jerk during a physical exam.

There are lots of things kids don’t like about doctor’s visits; shots, blood tests and throat swabs top the list. One thing they love is having their knee reflexes checked. A reflex is an involuntary, ...

There are lots of things kids don’t like about doctor’s visits, with shots, blood tests and throat swabs topping the list. But one thing they love is having their knee reflexes checked. A reflex is an ...