During sexual arousal, blood from other parts of your body flows to the many blood vessels in the genitals. It is partially what makes the genital touching feel so good. The skin, though, is fairly thin and there are many, many capillaries which are right on the surface of the skin. It doesn't take much rubbing of skin to skin, or even hands to skin to cause the skin to break through and there be bleeding.

You added a comment in your profile though that concerns me. You said that it bleeds near the clitoris and smells 'bad'. Since we all have a natural body smell, it is hard to know if the smell is something to worry about, but since you mentioned it, it is something to consider. IF you have a smell that is not your normal body smell it may mean you have an infection that needs to be treated. Notice I didn't say disease. There are several sexually transmitted diseases, but since the genital area is warm and moist it also can harbor bacteria which could cause an infection.

I suggest that you visit a doctor you respect and ask this doctor to examine you for an infection in or around your genitals. If there is one there, it is easy to cure, yet it can also be responsible for the skin to bleed more easily.

Again, thanks for writing and I am glad to answer your questions.

Reviewed by Sexual Health Editorial Team