Birth, Infancy, and Maturation - The first six months
It is extremely important that the baby have regular health supervision. Your baby's physician—whether pediatrician or general practitioner—will check the baby's height and weight on each visit, and make certain she is growing and gaining at a satisfactory rate. Often, the first sign of illness in a baby is a change in her height and weight pattern.
Although no two children develop at the same rate, it is possible to make certain generalizations about their development. See the charts in this chapter showing the growth rates for boys and girls.
By two months a baby often holds her head up when she lies on her stomach or when she is being held up. She recognizes large objects, and she knows her bottle or feeding position. She can probably smile.
Sometime during the second or third month, your physician will start a series of injections against diphtheria, whooping cough, and tetanus (called DTP ) , as well as oral immunizing agents against polio—the Sa-bin vaccine . See the chart in the “Alphabetic Guide to Child Care” under “Immunization” later in this chapter.
The Three-Month Mark
By three months most babies are eating some solids specially processed for babies—fruits, cereals, vegetables, meats—in addition to having formula. They may, of course, still be entirely on breast milk. Your physician will also suggest the use of vitamin supplements, in the form of drops, which can be added to the baby's milk or solid food. All babies need vitamins A, C, and D. Occasionally, vitamin B is also prescribed. If fluorides are not present in your drinking water, they are often added to the baby's vitamins to retard tooth decay.
At Four Months
By four months the baby will look at moving objects. Do not be surprised if her eyes cross. This is a normal condition during early infancy, and may even persist for a year.
At about this time, the baby may also learn to turn over from front to back—an important milestone. Some babies may have developed bald or flat places on the back of the head from lying more or less in one position. At about this time the condition should begin to disappear.