Itchy Armpits! Blah!?

Question

OK. So I've read that people were getting itchy armpits because they had tried new deoderant. I decided to stop using antipersperant and now they are itching. I tried putting deoderrant under one arm and the arm that had nothing was itchier than the on with deoderant. I don't understand why the one with nothing on it is the one that itches more. Is it because my body is starting to sweat more than normal? I normally don't sweat at all so it's no big deal if I use it or not. I was just used to it but now I think I want to go back because it bugs not to put it on. What is going on???
V

Answer 1

Part of it is from dry skin and friction.