### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
my son is 14 and recently his chest, belly, legs and most of his arms and hands turn ed a purplish blue color. He was not having trouble breathing and had no chest pains. The pediatrician told us to go the the ER. They did an EKG, his oxygen level was 99, they did a chest xray and a CT. They could find nothing wrong. They said his white blood cell count was slightly elevated. The coloration faded in about an hour. It returned an hour later but not as dark. The next day it happened several times but never as dark as the first time it happened. They are sending us to a cardiologist. I am looking for some answers as to what could be wrong with him.

### output:

The bluish coloration as you have described may occur when there is deoxygenated blood -that is blood with less oxygen in it. This condition in medical terms is called CYANOSIS (cyan meaning bluish). Since our heart is the pump that supplies us with oxygenated blood, the first step in a child with cyanosis would be to get the heart checked. Your doctor has correctly referred you to a cardiologist as this is the first step. Certain heart problems require a cardiologists' expertise. They would probably do a test called Echocardiogram to get a better view of the detailed working of the chambers, valves etc. of the heart.  Not all cardiac diseases present with chest pain or breathing problems. Some have mild symptoms and some do not have any symptoms. The elevation of the white blood cell count since it is marginal may or may not be significant. Medical care is very advanced in the 21st century & there is a solution for almost all problems. Warmest regards