I have PCOS I would put my hair problems partly down to this but my own misadventure. I have not been that good at looking after my natural hair whilst wearing wig/weaves and even relaxers.
My hair is very fine and despite knowing this I have used relaxers to have straight hair instead of maybe texlaxing or going natural. This has resulted in my hair being weak and brittle. Using wigs has grown my hair but my edges are so-so and whilst I don't have bald spots I definitely have patches that are a little 'lighter' than others.
Right now I am using Jamaican Castor oil and megatek on my edges, Aphogee to strengthen my hair and a good deep conditioner for moisture, coconut oil and a spray in moisturizer on my natural hair under my wigs. I'm also trying Hairfinity to try and get the right amount of vitamins into my body to stimulate hair growth.
Try using Jamaican Castor oil on your edges and try to avoid putting any stress on those edges.