Will I ever overcome this skin problem I had for over eight years?

Hello. Since, I was 17, I had this skin problem. Whenever I walked out of my house, and walked for like five minutes, my skin would itch and it would feel like burning. It is a terrible experience. I went to a doctor(dermatologist!), and she said that it was just stress, because there were no rashes, and that it happens to her as well. But, it almost always happens, and it's so intense. I actually feel like killing myself during the time that it happens, and that is the main reason why I don't go out much. Will I ever overcome it? And, when? What is the nature of this problem? Please, let me know.Thank you in advance.