Many clients ask me what to do about breakouts on the scalp. This is like pimple-like acne on the scalp. One culprit can be waiting too long in between shampoos. Oil and dead skin can accumulate on the scalp that cause blockage of the pores.
I recommend shampooing more often and Nioxin shampoo. Nioxin is a professional derma-purifying shampoo that removes dirt, excessive oil and other environmental residues from the hair and scalp. Other factors can be hormonal changes or medication changes. You can check with your doctor.