Patient : I am 14 years old and my leg started feeling without circulation and it hurt a lot. Then the next day my vain from behind my knee is popped up and very dark blue something that my other knee doesn't have.The knee that has the popped vain is visible and you can trace it down until the foot. My leg still feels a little without circulation but not as much. What do I have? Is it serious? Should I tell my parents?
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