Question: what causes pimples on the back of my head?
Answer: These pimples can be itchy and sore. Just like pimples elsewhere, pimples on the scalp occur when a pore or hair follicle gets clogged with dead skin cells or sebum, which is the natural oil the skin uses to keep itself moisturized. Bacteria, yeast, or mites can also get into the pores and cause a reaction.