Hi doctor. I'm 23 female. I have this disturbing itchy in the back of my neck and now down of it near my shoulder. And now intense itching down my tummy. Bladder region exactly. This region changed in colour due to itching. And there's marks like scratching and some blood due to irritation by my nails coz it's really itchy. Especially at bed time. The skin of the effected regions have changed in colour became darker. please what it could be. I went to doctor. Was itching onlyvin the back of my neck. And diagnosed as stress itching. Now spreads to other places in my body? Starts like a sting.