Hi my 13 years old daughter complaint about her on and off pain in her heart. I asked her what kind of pain is it? its a sudden sharp pain, that will last a few seconds. I asked her about her breathing, she told me that it is fine. she s not having a hard time breathing. She don t like eat vegetable she is more a meat eater, she have plenty of activities like dancing. She also have a history of Allergic Rhinitis, but its been a while that I haven t seen her with this, sometimes she will have a common colds. What may be the cause of her complaint?