Baby’s mouth is always open, may be a normal physiological phenomenon, may also be caused by adenoid hypertrophy, upper respiratory tract infection and other reasons.
1. Normal physiological phenomenon: for newborn babies shortly after birth, the lung function may not have been developed, nasal mucous membrane secretion is more, the nasal passage is not moist, resulting in the lungs can not be converted from the nasal cavity gas, which leads to the baby’s mouth is always open, to gas exchange, if there is no other discomfort, then it is a normal physiological phenomenon.
2. adenoid hypertrophy: adenoid hypertrophy refers to the adenoids due to pharyngeal infection or repeated inflammatory stimulation and pathological hyperplasia and hypertrophy, mainly manifested as nasal congestion, runny nose, pharyngeal discomfort, coughing and other symptoms, when the baby adenoid hypertrophy will lead to the respiratory tract resistance, thus appearing to open the mouth to assist in respiratory performance.
3. Upper respiratory tract infection: upper respiratory tract infection is a general term for acute inflammation of the nasal cavity, pharynx or larynx, common pathogens for viruses, only a few caused by bacteria, mainly manifested as sneezing, nasal congestion, watery nasal discharge, sore throat and other symptoms, when the patient nasal secretion increases or nasal congestion, may affect the respiratory tract smooth, which will appear in the case of the mouth is always open.
It is recommended that patients seek timely medical examination to clarify the cause of the disease and then carry out targeted treatment, pay attention to monitoring the condition in life, and regular review.