A child’s dry cough without phlegm is a relatively common condition, and the presence of such symptoms can often be particularly painful for the child. So, what is the cause of a baby’s dry cough, take a look below. 1, cough caused by the cold Baby if there is an itchy throat, regardless of the day and night cough, an irritating cough, runny nose, love to sleep, but also accompanied by low-grade fever indicates that the baby has a cold, this cough is caused by the cold, usually dry cough, the situation is not serious. 2. Cold air irritating cough Cold air stimulates the respiratory mucosa, and the respiratory mucosa becomes congested, edematous, exudative and other inflammation-like reactions, thus inducing a coughing emission, which is not microbially infected at first, but can be followed by viral bacterial infection over time, but it is a baby who has lived indoors for a long time, and as soon as it goes outside in winter, the temperature drops sharply, and the baby makes an emission, especially an irritating cough . 3. Dry cough caused by allergic cough If the baby has a persistent and recurrent violent cough, the cough is more severe when the baby cries or is active, and the cough is more severe at night than during the day, and the baby usually shows shortness of breath, the mother must conclude that the baby has an allergic cough. This is caused by both antigenic and non-antigenic stimuli and occurs more often during pollen season. 4. Cough caused by upper respiratory tract infection If the child’s upper respiratory tract is infected, the mucous membrane of the nasal cavity is already inflamed and when dry air is unconsciously inhaled during breathing, the nasal cavity becomes more uncomfortable and even aggravates the cough. Therefore, when the child is at home, the mother can appropriately use humidifiers and other methods to increase the humidity of the air to reduce the stimulation of dry air on the child’s nasal mucosa. 5. Pediatric cough caused by bronchitis Pediatric bronchitis mainly affects children under the age of 3, which is also an acute upper respiratory tract infection. Pediatric cough caused by bronchitis occurs mainly in children around the age of 1 year and is common in the spring and winter months. Bronchiolitis initially irritates the upper respiratory tract, causing a dry cough in the child, which subsequently produces bronchial secretions and aggravates the cough. 6. Pediatric cough caused by pharyngitis Discomfort in the mucous membrane of the pharynx often stimulates the child to develop a cough that is more intense, with a tickle in the throat. In this case parents should not solve the problem at home by themselves, but should promptly seek medical attention and ask the doctor for a clear diagnosis followed by symptomatic treatment.