Red pimples on the head may be caused by diseases manifested as pimples, the causes include folliculitis, acne, eczema, etc., and the treatment includes medication. 1. Folliculitis: If the hair follicles are infected by bacteria and other microorganisms, inflammatory pimples can appear, at this time, you can apply mupirocin ointment, erythromycin cream and other medications, if it is caused by fungal infection, then topical amorphophallus ointment, ketoconazole lotion and other treatments. 2. Acne: If the pimples are caused by Propionibacterium acnes infection of the head, you can give metronidazole, adapalene gel and other drugs for anti-acne treatment, oral doxycycline, isotretinoin and other treatments if necessary, and you should pay attention to avoiding late at night and maintaining local hygiene. 3. Eczema: related to genetics, allergies, chronic diseases and other internal and external factors, erythema, papules with mossy changes, itching and other symptoms, can be treated with hormonal ointment such as halometasone, or oral antihistamine drugs such as loratadine and other treatments. Finally, the phenomenon of red pimples on the head, please consult a doctor in time, the use of drugs need to follow the doctor’s advice, do not self-medication.