My Daughter Who Is 11 She Is In Pain With

my daughter who is 11 she is in pain with her bridge if her foot a lump appeared out of know where with veins very blue and appeared like the lump out of nowhere . just apove its red and she says that hurts to. she had this 2 times in the past so I don't know what has happened its seems to go and come back she is now saying her toes are nume.