I've always had a full head of hair and I've noticed thinning for the last year. I'm seeing a dermatologist and getting corticosteroid injections approx once a month, they don't seem to be working. From what I'm reading ferritin needs to be between 50 & 70 for hair regrowth. My AA was triggered by menopause but I question that because I've been postmenopausal for the last 4 year and my hair started thinning a year ago. Would PRP be a good option for me? Thank you.