What is the reason for pimples in back of head is it qurable?

Acne and skin care: Pimples and blackheads most commonly occur when our hormones are changing rapidly, such as with puberty or menopause, or from birth control pills. These hormones cause our skin to produce more sebum, which can easily clog pores and create acne symptoms. Prevention is the best course, by using gentle facial cleansers once or twice a day. Benzoyl peroxide can help as well.