It is very common in women because most women wear high heel and narrow shoes. That does not apply to me. I have a couple of pairs of shoes with maybe a 2 inch heal but only one pair is narrow. My shoes of choice are very comfortable, roomy and flat. It is the running that caused it. The doctor I saw this time is Gloria Beim. She wrote The Female Athlete's Body Book, she has been the team doctor for the US Cycling Team as well as the US Olympic Team. (She knows her stuff!)
Dr. Beims says I have two, one is where it is on the picture and a smaller one is developing on the other side of the same bone towards the outside of my foot. She knows I really want to run a marathon and get active as quick as possible so she is treating me aggressively. She gave me a cortisone shot today and I see the physical therapist tomorrow. She said to stop doing anything at that hurts (but I can still ride my bike to work since it is .75 of a mile each way). Dr. Beim said in about 1 week to try running a short distance and see how it feels. If it hurts, stop if it feels good then the next day try to go a little further.
Dr. Beim also said that I might need 2 or 3 shorts of the cortisone and the worse case scenario would be surgery to remove the nerve all together. For now I think I will hit the pool instead of the road and the trail - at least for the next week.