What happens to a two-and-a-half-year-old baby who coughs for two days

Two and a half years old baby cough for two days, may be caused by long-term exposure to cold air stimulation respiratory tract, may also be caused by air containing dust, pollen and other irritants. If the baby's body resistance is relatively low, infected by pathogenic bacteria will also cause cough this symptom. Suggestions: When the baby cough is serious, the family needs to take the baby to the hospital in time for examination.