My son Leo has always been on the small side. However, the older he gets he keeps falling of the curve. He has had several recurring health problems to inlcude: asthma, severe asthma, food allergies, lactose intolerance, and frequent infections. Recently at a ER visit I noticed he has lost about three lbs in two weeks. I am concerned but dont want to be the over bearing freak mom in the drs office every day. My gut feeling has always been that there is something else going on with his health? Any suggestions as to what migt be going on and where to start? Thanks for the input!