Underarm Rash

Well I'm finally thinking about doing something about this rash armpits throughout the year!

The deal is that I get an itchy arm undermy. Red bumps form, and it gets really itchy. Recently, I looked like a dog, I mean come on, I scrape the pits? It is difficult to shave because of all the bumps, I do not know if it's because of my deodorant and got sensitive skin. I usually use Dove sensitive skin or Lady Speed stick, invisible, more fragrant!

Those of you had this rash or similar? The reason why it forms, how to get rid of him?

Thank you!

Ur So it is deoderant stop using everything indicates that the use deoderant or DONT stop using a diaper .... if u