The penis is a male genital organ, and teenagers are mostly energetic, excessive masturbation and frequent sex can cause the occurrence of penile and scrotal edema. The changes in the penis and scrotum can be visually seen when edema is present, and the edematous area can be seen as transparent in a dark place with a torch. The symptoms of scrotal edema are enlargement of the scrotum on one or both sides. Differential diagnosis: Scrotal edema: During embryonic life, there is a Prime in the groin, the ventral femoral sphincter Prime, which aids in the fixation of the testes descending into the scrotum or the round ligament of the uterus. In some children, this sphincter closes incompletely after birth, causing abdominal fluid from the abdominal cavity to enter the scrotum, known as scrotal edema. It may occur days, months, or years after birth. There is usually a bulging mass in the scrotum or labia after crying, exercise, or defecation in children, which may disappear on its own after bed rest or sleep. In severe cases, there will be abdominal pain, nausea, vomiting, anorexia or crying and restlessness. Thickening and swelling of the spermatic cord: This is one of the symptoms of spermatorrhea. When you have spermatorrhea, the inflammation can cause thickening and swelling of the spermatic cord, and when it adheres to the surrounding tissues, you can have painful scrotal cramps, lower abdominal pain and perineal traction pain. If the infection is severe, there may also be systemic reactions such as fever and headache. The spermatic cord alone is less common and is mostly caused by the spread of infection from other parts of the reproductive system. The disease has an acute onset, with thickening of the spermatic cord and more pronounced local pain, and may radiate along the spermatic cord to the groin, or even the suprapubic or lower abdomen. On examination, the surface skin is red and swollen, the spermatic cord is thickened in the shape of a fusiform or striated cord, and the vas deferens is not clearly visible to palpation. There is a fluctuating sensation after abscess formation. Scrotal enlargement: It refers to the lesion of the scrotal skin and its contents (sheath testis, epididymis and spermatic cord) or the descent of the abdominal contents (ascites viscera) into the scrotum, resulting in an increase in the volume of the scrotum. Infected scrotal enlargement is mostly accompanied by redness, heat, pain and other symptoms; testicular or epididymal tumors are more painful; elephant skin swelling late often due to secondary infections and eczema or ulcers patients with penile edema after sex, it has been clear that there is mycosis fungoides consider the possibility of mycosis fungoides glans (of course the local secretion culture has been confirmed) the application of antibiotics is prohibited in the treatment.