Molluscum contagiosum on the inner thigh is not an STD, but molluscum contagiosum can be spread through sexual contact. STDs are diseases that are triggered by sexual transmission. Molluscum contagiosum is a contagious skin disease caused by molluscum contagiosum virus infection, mainly by direct skin contact transmission as the main mode of transmission, but also through sexual contact or public facilities (such as bathrooms, etc.), occurring in the genitals, buttocks, pubic bone and inner thighs of the molluscum contagiosum, mostly by adults through sexual contact transmission. Molluscum contagiosum itself is not a sexually transmitted disease, and at present it is mainly treated by wart clamping, laser, liquid nitrogen freezing and so on. Usually avoid scratching to prevent the spread. Common clothes and bath towels in kindergartens or collective activity places should be sterilized.