Alopecia.

I don’t know what topic to post this under but all well. I’m hoping at least someone can help or give insight. I would like to bleach my hair so I put a pastel color in it. It’s darkish at the moment but I have alopecia and my mom has been hesitant to let me because of it. I’ve had two times where it happened, back in like third-fourth grade and then two years ago around seventh grade. I don’t know how my hair will react and definitely do not want to lose all of it. I have alopecia areata so it falls out in patches instead the whole head. Any help would be appreciated.