If you are not sexually active but have a white rash of varying sizes around your anus, you may have warts, pseudo-warts and anal eczema. 1. Warts are a skin disease caused by the infection of human papillomavirus, which is mainly manifested in the small buds and pimples around the genital organs and anus. Sexual contact is the main means of transmission of warts, but in the absence of sexual intercourse, it can also be infected through contact with the contaminated household goods of the patient. 2. A benign papillomatous lesion, the disease is not contagious, the cause of its development is mainly related to local infection, mechanical stimulation and excessive cleaning, poor hygiene and other factors. Pseudo-warts are mainly white or yellowish smooth papules, mainly in the inner labia minora and the vaginal vestibule of women, but also around the anus, around the urethra, and within the foreskin of men. 3. Perianal eczema is a kind of inflammatory skin disease formed after the stimulation of internal and external factors, which is rich in clinical manifestations, such as small pimples, blotchy rash, small blisters, etc. Due to the individual differences in clinical manifestations, it is not easy to find a solution to the problem. Due to the individual differences in clinical manifestations, the specific situation requires a doctor’s consultation, and then analyze the situation according to the actual situation.