Hi,
it's quite possible that you could be premenopausal. The brown spots are the toxins in your body. Have you thought of detoxifying? Detox foot patches are the best thing on the market for that.
I have a name for you, i'll only use the lady's first name as i'm not sure she'd like her name enblazoned on the internet.
she posts them right to your door. A box of 30 detox patches costs me $55.00 $6.50 postage in australia. I'm not sure of postage out of australia though. I had brown spots and used the patches and they're almost gone.