Just as I self diagnosed (I bet doctors HATE when I self-diagnose), I have alopecia areata. There is a genetic component to it - sorry Connor, Aiden, and Isabella. It is technically an auto-immune disease - which means that basically my body thought that the hair was a pathogen (germ) and attacked it, causing it to fall out. Once you get it once (which we believe I had it sometime in my pre-teens/teens too) you're more susceptible to have it happen again. Shockingly, your body can actually dispel all your hair (eeek), but it isn't super common and my dermatologist doesn't think I will lose all my hair). Most doctors agree that there is some sort of connection to stress (which I will certainly NOT deny that I have a LOT of stress in my life), but it is hard to prove.
I got about four cortisone injections in my head and I have an appointment in a month to see if I'll need more injections. Super easy!
The best part was when the dermatologist told me I need to find a way to eliminate the stress in my life. Ha! Ha!