What causes blood blisters popping up on stretch marks?

Skin tears. Stretch marks are tears in the skin cause by weight gain. They can be covered up, but not improved by creams and lotions. The only possibly effective therapy is cosmetic plastic surgery, but that's a big step for a non-health and non-life threatening problem.

Related Questions

Can popping blood blisters on my scrotum cause blood in my semen?

No, but see your doc. The question is, what are these things? Why would you be getting "blood blisters" on your scrotum? This needs to be looked at by a dermatologist or urologist, the sooner the better. Read more...