I once had the same disease as you. I feel itchy every night. I've also seen doctors many times. The doctor prescribed the medicine and took it. I have been ill for several days again, especially in winter. I always thought it was skin allergy. Later, I was desperate for treatment, so I stopped taking any medicine. Just last year, my friend showed me a CD called Healthy Eating in the New Century, which was told by Teacher Zhou Yongshan. After reading it, I realized that there was something wrong with my diet, so I ate it according to his method. It stopped itching after a while, but it's fine now. I am very happy now, I won't scratch all the time, and my skin is healthy. You go to Youku to search for that video, and you will understand after watching it. Remember to call it healthy eating in the new century. And remember not to eat those western medicines again, it's useless and harmful to people's lives!
I wish you a speedy recovery, my former patient!