It occurs when the pinky toe moves toward the fourth toe, and there's deviation of your fifth metatarsal - the long bone in your foot that connects to your pinky toe. And while they differ in size ...

In both cases, you can feel burning and sharp pain in the ball of your foot, but Morton's neuroma is usually felt between your third and fourth toes (the two toes closest to your pinkie toe).

Q. I am a 69-year-old runner who has had pain in my left foot between my third and fourth toe. This pain has changed my gait and now I have developed left hip pain. I am able to run, but it is ...