Hello, why is my left nipple area hard and scaly? It's like it's cracked and also dark brown while my right nipple is fine and light brown but can see cracks/lines starting to appear right nipple area aswell. There's no pain or anything but it's very rough when i touch it and i've tried rubbing it with my hands but nothing happens and if i rub too hard/fast it starts to hurt a little. What's wrong with it and how do i make it normal again? Thank you. 24 Male. Picture: https://ibb.co/CK0VxHc