If the cough is simple without fever, it is considered to be caused by bronchitis or pneumonia. At the same time, allergic asthma, cough variant asthma and other causes can also occur simply by repeated cough without fever. At this time, it is recommended to improve the routine blood test and chest X-ray to clarify the cause of the disease. If the result of bronchodilatation test is positive, it is considered to be related to bronchial hyperreactivity caused by allergic factors. In this case, it is necessary to use anti-allergic drugs for treatment, such as ketotifen or paracetamol. Oral treatment with montelukast sodium is also available. During treatment, it is important to avoid exposure to cold air or irritating odors to avoid recurrence or exacerbation of the condition.