Im 26 years old, currently still lactating my 1 1/2 yo child. I cannot seem to gain weight which is 100lb (or 5 less sometimes) and am a bit worried. Since the last year I have noticed brown stains in my hands, I thought were dryness, and applied cream daily. Sometimes it seamed less, but it never goes away. Now I have the stains in both my hands and am worried. I also have some discomfort in my lower back.