After the baby is born, there are some common abnormalities that occur, such as drooling and polyuria. So how should moms and dads respond to this situation? 1, baby hear the movement of the body on a jolt, is the nervous system development is not normal? My baby was born just a few days ago, but as long as there is a little movement in the house when he sleeps, his body jolts, opens his eyes, and his body shakes, his limbs stretch outward, and then cries when his arms are crossed in front of his chest and released, very much like being frightened. Is the baby’s nervous system not developing normally? It turns out that this is a physiological phenomenon when a newborn baby is in this situation. Because the baby’s nervous system is not fully developed, after being stimulated by environmental sounds, the nerve impulses are transmitted to the brain and cannot be centrally located in the cerebral cortex, so that the stimulus waves are scattered to the nerve fibers of the muscles of the limbs, thus causing the movement and shaking of the limbs. After 3-4 months of life, this phenomenon will slowly disappear as the baby’s nervous system gradually matures. Therefore, mommy does not have to worry too much. When baby jumps in surprise, gently pressing any part of his body will calm him down. When should I go to the doctor? If your baby is still jumping 4-5 months after birth, you should go to the hospital for a neurological examination. 2.Baby is breathing fast and slow, does he have pneumonia? My baby was just born 15 days ago, I found that her breathing is fast and slow, sometimes deep and sometimes shallow, and yesterday she did not even breathe out when she slept, which scared me a lot. I was worried that my baby had pneumonia, is that right? This is not necessarily a sign of abnormality in a newborn baby. This phenomenon occurs because the baby’s brain is not yet well developed and the respiratory center is not yet functional, so it cannot rhythmically control the breathing rate. As a result, breathing is unevenly fast and slow, and sometimes even pauses for a few seconds after falling asleep. When to see a doctor? When your baby is breathing more than 60 times per minute, watch out for neonatal pneumonia and take your baby to the doctor immediately. Also, if your baby is blue or spitting at the mouth, you should go to the hospital immediately. 3, baby’s skin has turned yellow, is hepatitis? My baby was born pink and everyone praised her skin color as good as her mother. But less than 3 days after we got home, her skin turned yellow all of a sudden. We were anxious, did my baby have hepatitis? Well, it turns out – when baby’s skin starts to turn yellow two or three days after birth, it’s not hepatitis. This is due to the baby’s establishment of autonomous respiration after birth, which increases the oxygen concentration in the blood, and the excess red blood cells are destroyed, resulting in an increase in unconjugated bilirubin in the blood. The baby’s liver is still immature and cannot quickly excrete the increased bilirubin, which leads to bilirubin deposition on the skin, causing the baby’s skin to turn yellow. This phenomenon is called physiological jaundice, which usually starts with yellowing of the face, followed by gradual yellowing of the sclera and skin. However, it does not affect the baby’s mental state, feeding or sleep. In full-term babies, jaundice lasts about 4-6 days and gradually subsides within 7-10 days; in premature babies, jaundice usually appears 3-5 days after birth and reaches its peak in 6-8 days, and the jaundice subsides later, perhaps after 2-3 weeks. When should I go to the doctor? If jaundice appears in full-term babies for more than 2 weeks or longer, or in premature babies for more than 3 weeks, or if it reappears after the jaundice has subsided, it may be pathological jaundice, so go to the hospital early for treatment. 4.Baby’s hands and feet are shaking, is there a calcium deficiency in the body? When I was changing baby’s clothes and diapers, I noticed that his limbs and hands were shaking involuntarily, and even his chin was shaking. The whole family was very nervous. Was baby lacking calcium in his body? It turns out that – this phenomenon has nothing to do with calcium deficiency. Newborn babies, the body’s movements are mainly controlled by the subcortical center and spinal cord and other nerve tissues, which are functionally relatively large brain tissue, and are not fully controlled by the cerebral cortex, and only the movement controlled by the cerebral cortex is the most stable, coordinated and purposeful movement, therefore, babies often appear purposeless, involuntary muscle shaking. With the gradual development of the brain, the function is becoming more and more perfect, baby this involuntary shaking will slowly disappear. 5, baby’s little hand always clutching, is it congenital spasm? My baby was just born, and I don’t know why she always clutches her little hands. When my mother washed her hands, she had to break them apart, but as soon as my grandmother let go, she clutched them again. This made me worry if Baby’s hand was a congenital muscle spasm. It turns out – this phenomenon is unique to newborn babies. The reason is that, when the baby is not born, it is restricted by the space in the mother’s womb, and its body remains curled up, and both hands are clenched tightly. Although after birth, the body can be stretched out, but in the first few months, because the nervous system has not been fully developed, baby only when there are objects touching his palms, out of the innate reflex immediately clutching, fingers and palm movement is still less. As the neurological system gradually develops, the baby’s hand movements will gradually increase and strengthen, and the little hand will naturally unfold and will not be clenched tightly all the time. When should I go to the doctor? If your baby’s hands have been unfolded and relaxed since birth, this indicates low muscle tone, which is abnormal. If your baby still has frequent limb tremors after the first month of life, you should take him/her to the doctor.