I have some black dots kinda stuff on the base of my penis and around , dry and not hurting but slowly getting bigger in size and spreading , ?

Doctor can evaluate: Rashes are hard to describe and hard to visualize in words. Rashes of bumps at the base of the penis may be blackheads (comedones) or be folliculitis, which is an infection in the little hair follicles in the skin. Rashes that itch a lot may be allergic reactions and/or skin infections. A primary care doctor or a dermatologist can evaluate to decide on a diagnosis and talk about treatment options.