Patient's question:
The baby is 6 months old. When held upright, the waist is still very straight and cannot be bent down. The baby arches its back and lies on an adult's shoulder. It won't stand upright yet, and the legs are always curled up, making it impossible to stand. However, when kicking, it seems strong. When lying on the bed, the feet kick against the bed, and the buttocks can be lifted. The baby is good at jumping, and its grasping ability is also very good. It can be amusing, chase objects, and make babbling sounds. The only issue is that the waist is very soft. Even with legs supported, it still won't stand. It looks softer than others, as most babies can stand at 5 months, with straight waists. Is there something wrong with our baby? Our baby doesn't drink much milk, only 16 pounds, and only 480 milliliters of milk a day. Does that have anything to do with it?Doctor's answer:
Generally, it is considered that the lack of vitamin D, or less holding the baby, or less opportunity to crawl for the baby, may lead to weak muscle strength in the baby's waist and back. Let the baby get more sun exposure, use a gradual approach every day to encourage the baby to crawl more, and enhance feeding while providing complementary foods. Some developmental delays, such as premature birth, choking, or breathing difficulties, may require a hospital check-up.