If the symptoms of redness, swelling and pain appear in the genitalia, the first consideration is caused by inflammation, such as genitalia infected by bacteria, viruses, fungi, molds, or even trichomonas and caused by genital inflammation. In this case, you need to use iodophor disinfection or 1:5000 concentration of potassium permanganate solution for cleaning, and then promptly go to the hospital urology or dermatological venereal disease department to take the genital surface secretions for examination, in order to clarify the specific causative organisms that cause inflammation. If it is caused by bacterial infection, you can apply erythromycin ointment, Bactrim for treatment; if it is caused by fungal infection, you need to apply Dakin cream for treatment; if it is caused by mold infection, you can apply clotrimazole cream for treatment. If the effect of purely topical drugs is not good, if necessary, you also need to take oral drugs, pay attention to a light diet during treatment, do not eat spicy and stimulating food, the need to prohibit sexual life, keep the local clean and dry.