Sorry, please take a minute to look at this... to start off I've always had a really high hairline at the temples, (and might have matured a little around puberty) so that's not the issue if you can check these pics out a second.
The issue is the density, as I found the top to be thinning out in my teens, then I was diagnosed Hypo and began Synthroid, and I think it stopped, but still remained rather thin.
This first photo is only a few months after being taken off Synthroid and put on Desiccated (so possibly not long enough to help hair), so change possibly caused different hair texture/thinning. Hair looks thin/raspy on top.
http://imageshack.us/photo/my-images/706/hairthinning.jpg/
While seeing another doctor at the university campus she said my iron was low, so put me on 300mg of Iron, along with the Thyroid now likely built up in system... this is 3-4 months after iron, 6 after natural thyroid
http://imageshack.us/photo/my-images/26/hairfull.jpg/
I dropped out of university soon after, returned home... original doctor said my levels were off and questioned my need for iron, so took me off both... back on Synthroid. The first picture is a year later, hair flat & dry, the second pics a year after that (2 weeks ago, when I shaved my head).
http://imageshack.us/photo/my-images/221/hairthinnntrmmpnhg.jpg/
I shaved it down to a nub a few weeks ago, and so it's really obvious now.
http://imageshack.us/photo/my-images/196/img0555j.jpg/
http://imageshack.us/photo/my-images/803/img0492rtrtr.jpg/
My barber says it hasn't changed since I've been back on Synthroid (2 years), but I feel it was thicker on natural thyroid/iron before I started seeing him, so he wouldn't know that.
I'm now in the process of changing back to natural, and getting my iron checked again... I have a lot of stress, obsessive, depressed, tired, anxiety in morning, hot flashes at night, feel restless at night, can't concentrate, stuffy nose in morning, oily pale dry skin, acne, and have to pee a lot.
Can you tell the difference between MPB and thyroid/iron hair loss - can you tell by pics? If it's not MPB, would it make sense that it restores within 6 months (like i think it did before?) now that I started Natural and iron again. If it is MPB, I'll just shave my head, it's a decent shape anyways.