My son was sick for about 2 weeks 7 years ago. He was fine all day but at night he would get a fever between 100-102 and feel really bad. It had been going on a week before I knew about it (he was 16) I finally realized this was not going away and took him to the emergency room. We were there for 8 hours. They did many tests on him and they were having a hard time figuring out what he had, finally the Dr. got an idea and had the lab check him for "Tick Fever" and thats what it was. He was given a very expensive antibiotic which cleared him up. He did not remember having any ticks on him but the Dr. said all they had to do was bite him and drop off.