Eyebrow hair loss

Hello.

I'm new to this sub.

I've been loosing hair from my brows for about 5 months now. I also have very patch regrowth on my legs since I waxed them. Could this be AA?

My eyebrows tend to have dandruff and are itchy (I do suffer with Seb Derm).

Also is white eyebrow hair a symptom of AA?

Are there any tests that can be done to check?

31F

Thanks!