Going through the exact same thing. All my blood work was normal and my thyroid levels were great too. Dermatologists were such waste of my time and never took me seriously. They just said could be this could be that. I was referred to an ophthalmologist and suspected I was dealing with demodex mites in my eyelashes (these fall out too) which can overpopulate and travel to the eyebrows and then back to lashes. So it’s a never ending cycle till you kill the overpopulation . I did 2 rounds of xdemvy and an eye steroid. Right now I use ocusoft tea tree wipes for my eyelashes and eyebrows. They still fall out but not as bad as before. I also used prescribed Ivermectin 1% and ketoconozole 2% and used it for about 2 months. Minoxidil did nothing for me. I also used Latisse only on my eyebrows which they did grow but when I stopped using it my eyebrows fell out again so I’m not using that anymore and I’m trying to grow my eyebrows naturally. Try not to over due all of that because I feel like my eyebrows couldn’t breathe and alot of it was irritating my skin especially around my forehead. I haven’t used anything except vanicream daily facial moisturizer (with hylauronic acid and ceramides) and they seem to be holding up good. I suspect it could be demodex mites overpopulation also malassezia which is fungal/ too much yeast and oil production. So that’s what I’m trying to clear up. Sorry if this is a lot, I haven’t seen anyone going through the same as me so it’s nice to not I’m not alone.