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.
CIPA is characterized by the absence of reaction to noxious stimuli, the inability to sweat, hyperpyrexia, mild retardation, and self-mutilating behavior. Thus the name congenital, meaning present from birth; insensitivity to pain, meaning inability to feel pain; anhidrosis, the inability to sweat.