This resolved the temporary crisis. Jana began gaining weight, and Susan began to feed more often to build up her milk supply. I'm worried this will happen to my baby. Your midwife or health visitor will work with you to find the cause. She'll want to get your baby back on track immediately to avoid long-term developmental and health problems.
Diagnosis is the key.
Your doctor or health visitor will need to determine the reason for your baby's failure to thrive. He or she may watch you breastfeed or bottlefeed to see if your baby's jaw is working correctly or to see if she's having trouble sucking. Your baby could have thrush or hand, foot, and mouth disease , which can make sucking painful. The treatment could be a matter of simply breastfeeding your baby more often to increase your milk supply or adding some supplemental bottle feedings. Occasionally intestinal problems may be diagnosed, such as an allergy to a certain formula or an intestinal infection.