I have a raised red bump on my inner thigh where right where it meets the buttocks, the "crease" I have gotten them before on my inner thighs, sometimes I have popped them and sometimes not. They always leave a dark purple scar. This time I noticed it because it was painful- I thought it was just another bump like I have gotten before. This one was quite larger and raised than any others. I squeezed it and some clearing bright red blood came out, but it is still raised but nothing will come out. What is this? I think it is caused from my legs rubbing together, however it is anucense, especially when it happens regularly (summer months), the more friction the worse it is. Is there anything I can do to avoid this from happening?