my hair is falling out again

normally i wouldnt be alarmed but its short as it is lol.
i remember it started around -50lbs, and then again at aroun -100 lbs and then it stopped and now its ALL OVER THE PLACE again. im not slacking on vitamins. im eating. im drinking lol. i dont know what it could be.
just thought i'd post. soon im gonna be posting a pic with a bald head