I know what you mean. I have dry skin but this is a different, almost burning or stinging kind of itch. I saw something that said that some women in menopause get this. I know you are too young but your hormones could be out of whack. I thought that might be why I was having them. I was found to be extremely anemic. After I had been taking massive doses of iron for 4-5 weeks, the itching has gone away. Something to get checked if you haven't.
I had my hormones checked because after a lot of research, I found that hormonal imbalances can cause itching - my cortisol was low so I am going on cortisol in the next few days when it arrives from the doctor.
Also, I think I was anemic as a child and wondering what kind of iron you are taking and what dosage & where to get it?? Please let me know, I'd like to try everything!
Hope you have a nice day