J45.30

Clinical Causes: Genetic predisposition or family history of asthma or allergies Exposure to environmental triggers such as pollen, dust mites, mold, pet dander, or air pollution Respiratory infections that trigger airway inflammation Workplace exposures to irritants or chemical fumes Cold air or sudden temperature changes Physical activity or exercise, especially in cold weather Smoking or exposure to tobacco smoke, including secondhand smoke

Key Symptoms: Wheezing during respiratory efforts, especially at night or early mornings Persistent cough, which may be worse at night or early morning Shortness of breath, particularly with physical activity Chest tightness or a feeling of constriction Mild to moderate breathlessness during daily activities Episodes that occur more than twice a week but not daily Symptoms that last for a few hours and improve with treatment

Diagnosis Path: Diagnosis of mild persistent asthma involves a comprehensive clinical evaluation, including a detailed history of symptoms and potential triggers. Pulmonary function tests, such as spirometry, are essential to assess airflow limitations and airway responsiveness. These tests can demonstrate a reduced FEV1 (forced expiratory volume in one second) that improves significantly after bronchodilator use. Additional assessments may include allergy testing or exhaled nitric oxide measurements to evaluate airway inflammation. Healthcare providers may also review symptom frequency and severity to distinguish mild persistent asthma from other respiratory conditions.

Treatment Protocols: The management of mild persistent asthma aims to control symptoms, reduce inflammation, and prevent exacerbations. Typical treatment strategies include: - Regular use of low-dose inhaled corticosteroids to reduce airway inflammation - Quick-relief inhalers (such as short-acting beta-agonists) for symptom relief as needed - Monitoring lung function periodically to assess disease control - Avoiding known triggers and environmental allergens - Developing an Asthma Action Plan to recognize worsening symptoms and appropriate responses - Patient education about inhaler techniques, medication adherence, and trigger avoidance In some cases, leukotriene receptor antagonists or other controller medications may be prescribed to enhance control. Ongoing medical follow-up is essential to adjust treatment plans based on symptom progression or response to therapy.