Question from Baltimore, Maryland, USA:

I am 15 years old, I have asthma, and I have suspected for a while that I might have a medical problem like hypoglycemia. I become intensely hungry between meals, and I feel dizzy a lot of the time, especially when I move my head. I also get frequent headaches and other pains. I feel cold a lot of the time and after a little exercise, I feel very tired, cold and hungry. I have heard that my father has low blood sugar, but he does not take medications or have a special diet, and I have never been tested. Whenever I bring up the topic with my doctor, she says that I am fine and nothing else. Please respond.