hi i had gone through your query and understand your concerns. i would come up with the possibility of ALLERGY is the underlying cause for your son sufferings and leads to MALABSORPTION -Allergies are defence system over-developed by the body to give warning that its metabolic system is unable to handle a substance in a normal manner possible causes; -INHERIDITED TENDENCY; child hood allergies often run in families .it may come from mothers who may not have had sufficient vitamin A and D during pregnancy. -DIGESTIVE INEFFICIENCIES, MINERAL and DIETARY IMBALANCES -RESULT OF VACCINATION; sometimes vaccines may be the cause for development of allergies DIET TO FOLLWO; - No sugar; which is an irritant to mucus membranes, although honey is good. -Reduce starch intake to your baby. -No white refined flour. -No salt. -Give food to her high in vitamins A and C,and calcium. -Avoiding frying foods which make fats less digestible to your baby. treatment option; i advise you taking Homeopathic medicines gives safe and permanent cure for your son allergic complaints consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your son complaints I hope this is helpful for you, thank you