This may not be exactly the same issue, but I also have had significant hairloss/thining happen. Turns out that my weight caused hormonal imbalances which resulted in having a kind of period for over 6 months solid. This resulted in my iron stores being extremely low. One of the things iron effects is your hair. I am now on iron supplements and hoping it will resolve itself but since hair grows in 120 day cycles, its a slow process
. Anyway, my doctor sent me to a skin specialist about the hair loss, so it might be an idea for you to see one if its affordable where you are from.