2 doctors weighed in:

I have purple bump inner thigh. Had for one month. Popped today and squirted blood. Lots of blood. Its never painful. Just purplish and shiny.

2 doctors weighed in
Dr. Julie Abbott
Preventive Medicine
1 doctor agrees

In brief: Staph infection

I believe the most common explanation is a staph infection.
..the most common bacteria living on your skin. The thigh is a common place due to friction of your legs rubbing together, reducing the skin's natural resistance to infection, causing a boil. They tend to recur and may be prevented with use of the skin cleanser 2% chlorhexadine and/or a course of the anti-staph antibiotic erythromycin.

In brief: Staph infection

I believe the most common explanation is a staph infection.
..the most common bacteria living on your skin. The thigh is a common place due to friction of your legs rubbing together, reducing the skin's natural resistance to infection, causing a boil. They tend to recur and may be prevented with use of the skin cleanser 2% chlorhexadine and/or a course of the anti-staph antibiotic erythromycin.
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