you should get tested. but you might just have dry skin. this is very common. as far as the penis is concerned you should use a creme called man1 man oil. it is the best penis skin moisturizer around and will keep things in good shape down there. i've used it for years and i love it. good luck.
a rash is appearing all over my body. started upper arms then back now penis concerned because i had unprotected sex. concerned about hiv