Some formulas have very little iron or none at all. Most doctors recommend using an iron-fortified formula. Some formulas are made from soy milk instead of cow's milk. If your baby seems to be allergic to formula made from cow's milk, your doctor may suggest using a soy-milk formula.
CIP (Congenital Insensitivity to Pain) is a disorder where a person cannot feel pain. CIP can also lead to CIPA (Congenital Insensitivity to Pain with Anhidrosis) where the body cannot feel pain and it cannot perspire (sweat). CIPA almost rarely ever developes from CIP but there has been cases.
Pain is a feeling triggered in the nervous system. Pain may be sharp or dull. It may come and go, or it may be constant. You may feel pain in one area of your body, such as your back, abdomen, chest, or pelvis. Or you may feel pain all over, such as when your muscles ache from the flu. Pain can be helpful in diagnosing a problem.