Bactrim is also known as mupirocin ointment. Whether you apply mupirocin ointment or erythromycin ointment to your perineum needs to be determined by whether or not the infectious agent is a bacterium, and which drug you are sensitive to. Both mupirocin ointment and erythromycin ointment are antibiotic ointments that are used to treat a variety of soft tissue skin infections caused by bacteria. Both ointments should only be considered if the skin infection is caused by a bacterial infection. Mupirocin ointment is mainly used to treat boils and folliculitis, and can also be used for eczema co-infections, and erythromycin ointment is mainly used to treat infections mainly in the treatment of common acne, small burns, and ulcerated surfaces. Need to be based on the specific condition of the patient’s pubic area to clarify the choice of which drug is appropriate. Mupirocin ointment is used with caution for pregnant and lactating women, and can only be used on the vulvar skin area, and should not be used in the vaginal mucosa. Therefore, the use of drugs in the pubic area needs to be applied under the guidance of a doctor.