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.
If milia have you bothered, there are a few things that you can do at home that may make them go away sooner. A doctor can quickly determine the severity of your milia just by looking at the cysts. The good news is that milia in the least severe form need no attention at all. Primary milia -- the kind babies get -- don't require a doctor's visit unless the condition lasts longer than a few months. The bumps commonly disappear within a few weeks [source: CNN]. If your doctor says you can go without medical treatment, there are a few things that you can do to lessen the symptoms.