Erratic noises from a newborn’s sleep may be normal, such as dreaming, or they may be due to a medical condition, such as laryngitis, epilepsy, or vitamin D deficiency. 1. Normal phenomenon: newborns may be caused by dreaming, may be for the dream is relatively new, so as to make uh-uh strange sound. Usually there is no other discomfort, and when the appetite and development are normal, there is no need to worry and no need to intervene. 2. Disease factors (1) When there is laryngitis, when the inflammation stimulates the mucous membrane of the throat, there will be itching of the throat, increased secretion in the throat and other symptoms, which will make a uh-uh sound when sleeping. (2) When suffering from epilepsy, the central nervous system is in a state of disorder, and may make a uh-uh sound while sleeping, so seek medical attention immediately. (3) Vitamin D deficiency can also cause newborns to make a hiccuping sound while sleeping. Newborns who make an uh-oh sound in their sleep may also be related to other factors, and can be actively consulted to clarify the cause of the disease and then targeted treatment.