The condition of bumps on the head with pus is likely to be folliculitis of the scalp area. Especially in the case of purulent folliculitis, this condition is mostly caused by bacterial infection, and it is possible that the cleanliness of the patient’s head is not too ideal, leading to this bacterial infection. If a localized purulent infection forms after scratching or due to the original seborrheic dermatitis and after scratching that causes the scalp to break down, it may also be caused by other types of infections, such as fungal infections, because fungal infections may also lead to impetigo, which may also react with pustules. Also, it is possible that sebaceous cysts have developed in the scalp area, and sebaceous cysts may also develop purulent pustules once secondary infection occurs. Therefore, if this occurs, all need to be treated with timely anti-infection treatment.