My feet hurt when walking and unable to stand too long

I have problem with my feet. I don't know whether it's due to diabetes or a common foot problem or skin problem. Someone said it's because the germ in water. Now my feet hurt when walking, unable to stand too long. The skin on my feet turned black. I post the picture in flickr
http://www.flickr.com/photos/77270117@N02/7493024900/in/photostream


I hope you can help me


Any help would be great, thanks a lot
Regards

Hi Jasa P,
have you thought of blood circulation or a reaction to medicine? my mother had something like that, she had problems with the thyroids, then this was destroyed with yodium, and had to take medicine since then, i think that the dosis was too high or it was a secondary effect of the medicine.

i hope this helps, good luck and see someone soon!!!