Body Mass Index (BMI). Body Mass Index (BMI) is measure of body fat based on height and weight that applies to both adult men and women. BMI does not differentiate between body fat and muscle mass. Therefore, body builders and people who have a lot of muscle bulk will have a high BMI but are not overweight or obese.
The bump: or hematoma as we call it, can last for 1-2 weeks. Sometimes it gets slightly worse before it gets better. If the child is acting normally, and not vomiting uncontrollably, she should be fine. If she starts doing those things, call your pediatrician.
A Dr. James Fortenberry, MD, Pediatrics, answered on behalf of Children's Healthcare of Atlanta. The fever and discomfort are usually gone by the third or fourth day and the mouth ulcers are gone by the seventh day. The rash on the hands and feet can last up to 10 days.