 [ Symptoms ] have vaginal discharge and pain gynecologist does not believe staph infection what do i do next [ Disease ] dehydration probably will not cause this symptom but many other conditions can usually the cause of the hands andor feet and legs turning blue is not serious    unless there are other symptoms involved such as shortness of breath or a fever depending on a person is skin color the extremities sometimes can look quite blue this is true of very fair skinned people i would suggest your daughter get checked out for this there are a few disorders that can cause this blueness of the extremities sometimes these disorders actually point to other conditions that can be treated or should be watched as your daughter ages i wish you both all the best