--- title: "Asthma: Symptoms, Causes, Diagnosis & Treatment | infoMD" description: "Asthma causes wheezing. Learn about symptoms, diagnosis, treatment options, and how to manage asthma with guidance from medical experts." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "MedicalCondition", "name": "Asthma", "alternateName": [ "Bronchial Asthma", "Reactive Airway Disease" ], "description": "Asthma is a chronic respiratory condition in which the airways become inflamed and narrowed, making breathing difficult. 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However, asthma can return in adulthood. Adults who had childhood asthma are more likely to have ongoing airway sensitivity. It's more accurate to say asthma can go into remission rather than being truly outgrown." } }, { "@type": "Question", "name": "Is asthma hereditary?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, asthma has a strong genetic component. If one parent has asthma, a child has about a 25% chance of developing it. If both parents have asthma, the risk rises to about 50%. However, environmental factors play a significant role in whether genetic predisposition leads to actual disease." } }, { "@type": "Question", "name": "Can you exercise with asthma?", "acceptedAnswer": { "@type": "Answer", "text": "Absolutely. Regular exercise is recommended for people with asthma. It strengthens the lungs and improves overall fitness. Exercise-induced bronchoconstriction (exercise-triggered symptoms) can be managed by warming up gradually, using a rescue inhaler before exercise if prescribed, and avoiding very cold, dry conditions." } }, { "@type": "Question", "name": "What triggers asthma attacks?", "acceptedAnswer": { "@type": "Answer", "text": "Common triggers include allergens (pollen, dust mites, pet dander, mold), respiratory infections, cold air, exercise, air pollution, cigarette smoke, strong odors, stress, and certain medications (aspirin, beta-blockers). Triggers vary from person to person, which is why identifying your specific triggers is so important." } }, { "@type": "Question", "name": "Is asthma a disability?", "acceptedAnswer": { "@type": "Answer", "text": "Asthma can qualify as a disability under the Americans with Disabilities Act (ADA) if it substantially limits a major life activity like breathing. This can provide protections at work and school. Whether asthma is disabling depends on its severity - most people with well-controlled asthma do not consider themselves disabled." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://infomd.com" }, { "@type": "ListItem", "position": 2, "name": "Conditions", "item": "https://infomd.com/conditions" }, { "@type": "ListItem", "position": 3, "name": "Respiratory", "item": "https://infomd.com/conditions/body-system/respiratory" }, { "@type": "ListItem", "position": 4, "name": "Asthma", "item": "https://infomd.com/conditions/asthma" } ] } ] --- [Skip to main content](#main-content) [![infoMD](/assets/infomd-logo-CtvTblFD.png)](/) [Home](/) [Conditions](/conditions) [Glossary](/glossary)[Shop](/shop) 1. [Home](/) 2. [Conditions](/conditions) 3. [Respiratory](/conditions/body-system/respiratory) 4. Asthma Respiratory [Respiratory Health](/topics/respiratory-health) # Asthma Also known as: Bronchial Asthma, Reactive Airway Disease infoMD Editorial Team January 20, 2025 8 min read Share: [](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Finfomd.com%2Fconditions%2Fasthma)[](https://twitter.com/intent/tweet?url=https%3A%2F%2Finfomd.com%2Fconditions%2Fasthma&text=Asthma) ### Quick Facts Type Chronic Affects People of all ages; often begins in childhood. More common in boys (childhood) and women (adulthood) Prevalence Affects approximately 25 million Americans, including 5 million children Treatable Manageable with inhaled corticosteroids and bronchodilators See a Specialist Pulmonologist or Allergist ICD-10 Code J45 ## Overview Asthma is a chronic respiratory condition in which the airways become inflamed, narrowed, and produce excess mucus, making it difficult to breathe. During an asthma attack, the muscles around the airways tighten (bronchospasm), the lining swells, and thick mucus clogs the smaller airways - all of which restrict airflow and cause symptoms like wheezing, coughing, shortness of breath, and chest tightness. Asthma varies widely in severity. Some people have mild, occasional symptoms triggered by exercise or allergens, while others have persistent symptoms that require daily medication. Asthma can be classified as allergic (triggered by allergens like pollen, dust, or pet dander) or non-allergic (triggered by exercise, cold air, stress, or irritants). Many people have a mix of both. Asthma affects approximately 262 million people worldwide and about 25 million Americans, including 5 million children. It can develop at any age but often starts in childhood. While asthma cannot be cured, it can be well controlled with the right combination of medication, trigger avoidance, and an asthma action plan. With proper management, most people with asthma can lead fully active lives. ## Symptoms Recognizing the symptoms of asthma early can lead to faster diagnosis and better outcomes. ### Early Symptoms - Wheezing - a whistling sound when breathing, especially when exhaling - Shortness of breath with mild exertion - Coughing, especially at night or early morning - Chest tightness or pressure ### Advanced Symptoms - Frequent wheezing that limits daily activities - Difficulty sleeping due to coughing or shortness of breath - Rapid breathing and increased use of accessory muscles (neck and chest muscles) - Exercise intolerance - symptoms worsen significantly with physical activity - Frequent need for rescue inhaler (more than twice per week) ### Emergency Warning Signs - Severe shortness of breath making it hard to speak in full sentences - Lips or fingernails turning blue (cyanosis) - No improvement after using rescue inhaler - Peak flow reading less than 50% of personal best - Chest retractions - skin pulling in between the ribs with each breath When to See a Doctor See a doctor if you experience recurrent wheezing, coughing that worsens at night, or shortness of breath with routine activity. Seek emergency care if you have severe breathing difficulty, your lips turn blue, or your rescue inhaler isn't providing relief - these signs indicate a potentially life-threatening asthma attack. ## Causes & Risk Factors ### Common Causes - Chronic airway inflammation driven by immune system overreactivity - Airway hyperresponsiveness - airways react too strongly to triggers - Genetic predisposition to allergy and asthma (atopy) - Environmental allergens triggering immune responses in the airways - Structural airway changes (remodeling) from chronic inflammation ### Risk Factors - Family history of asthma or allergies - Personal history of allergies (allergic rhinitis, eczema, food allergies) - Childhood respiratory infections - Exposure to secondhand smoke during childhood - Obesity - Occupational exposures to chemicals, dust, or fumes - Air pollution - Premature birth or low birth weight ## How It's Diagnosed Asthma is diagnosed through a combination of your medical history, physical examination, and lung function tests. Your doctor will ask about your symptoms, their timing and triggers, and any family history of asthma or allergies. During the physical exam, they'll listen to your lungs for wheezing and check for signs of allergic conditions. The key diagnostic test is spirometry, which measures how much air you can breathe out and how quickly. In asthma, airflow is reduced during exhalation and improves after using a bronchodilator - this reversibility is a hallmark of asthma. Additional tests may include peak flow monitoring (a simple home device), exhaled nitric oxide testing (high levels suggest allergic airway inflammation), allergy testing (skin prick or blood tests), and chest X-ray to rule out other conditions. In some cases, a methacholine challenge test is used - if inhaling methacholine causes airway narrowing, it supports an asthma diagnosis. ## Treatment Options ### Lifestyle Changes - Identify and avoid personal asthma triggers - Use allergen-proof mattress and pillow covers to reduce dust mite exposure - Keep indoor humidity below 50% to prevent mold growth - Keep pets out of the bedroom if you're allergic - Warm up before exercise and use a scarf over your mouth in cold air - Don't smoke and avoid secondhand smoke exposure - Follow a written asthma action plan ### Medications - Short-acting beta-agonists (albuterol) - rescue inhaler for quick symptom relief - Inhaled corticosteroids (fluticasone, budesonide) - daily controller medication to reduce inflammation - Long-acting beta-agonists (salmeterol, formoterol) - used with inhaled steroids for added control - Combination inhalers (fluticasone/salmeterol, budesonide/formoterol) - Leukotriene modifiers (montelukast) - reduce airway inflammation - Biologic therapies (omalizumab, dupilumab, mepolizumab) - for severe allergic or eosinophilic asthma ### Medical Procedures - Bronchial thermoplasty - reduces airway smooth muscle through controlled heat (for severe asthma) - Allergy immunotherapy (allergy shots or sublingual tablets) - reduces allergic triggers over time ### Complementary Approaches - Breathing exercises (Buteyko technique, diaphragmatic breathing) - Yoga - may improve lung function and reduce stress-related triggers - Salt therapy (halotherapy) - anecdotal reports of benefit, limited clinical evidence - Omega-3 fatty acids - anti-inflammatory properties may modestly benefit some patients ## Living With Asthma Living with asthma means learning to manage your condition proactively rather than just reacting to flare-ups. The foundation of good asthma control is having a written asthma action plan - developed with your doctor - that tells you which medications to take daily, how to recognize worsening symptoms, and when to seek emergency care. Using a peak flow meter at home can help you detect airway narrowing before you even feel symptoms. Most people with well-controlled asthma can exercise, travel, and pursue any activity they enjoy. In fact, regular physical activity improves lung function and overall fitness. The key is using your controller medication consistently (not just when you feel symptoms), carrying your rescue inhaler at all times, and staying on top of triggers. Environmental control measures - like keeping your home free of dust, mold, and tobacco smoke - make a significant difference. Regular follow-ups with your doctor help ensure your treatment plan stays current and effective. ## Potential Complications - Severe asthma attacks requiring emergency hospitalization - Permanent airway narrowing (airway remodeling) from chronic uncontrolled inflammation - Side effects from long-term oral corticosteroid use - Disrupted sleep, missed school or work days - Depression and anxiety related to chronic illness management - Respiratory failure in extreme cases ## Prevention - Avoid tobacco smoke - both firsthand and secondhand - Reduce exposure to air pollution when possible - Maintain a healthy weight - Manage allergies with appropriate treatment - Get annual flu and pneumonia vaccinations - Follow your asthma action plan consistently ## Frequently Asked Questions ### Can asthma be outgrown? ### Is asthma hereditary? ### Can you exercise with asthma? ### What triggers asthma attacks? ### Is asthma a disability? * * * ## Sources 1. Asthma. Mayo Clinic . 2. Asthma. National Heart, Lung, and Blood Institute . 3. Asthma Facts and Figures. Asthma and Allergy Foundation of America . 4. Asthma. World Health Organization . Medical Disclaimer This content is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Reviewed By infoMD Editorial Team Last reviewed: March 10, 2025 In This Article [Overview](#overview)[Symptoms](#symptoms)[Causes & Risk Factors](#causes-risk-factors)[How It's Diagnosed](#how-it-s-diagnosed)[Treatment Options](#treatment-options)[Living With Asthma](#living-with-asthma)[Potential Complications](#potential-complications)[Prevention](#prevention)[Frequently Asked Questions](#frequently-asked-questions)[Sources](#sources) ### Quick Facts Type Chronic Affects People of all ages; often begins in childhood. More common in boys (childhood) and women (adulthood) Prevalence Affects approximately 25 million Americans, including 5 million children Treatable Manageable with inhaled corticosteroids and bronchodilators See a Specialist Pulmonologist or Allergist ICD-10 Code J45 Advertisement Was this page helpful? Yes No ## Related Conditions [ ### COPD Respiratory COPD is a group of progressive lung diseases - primarily emphysema and chronic bronchitis - that cause airflow obstruction and breathing difficulties. Smoking is the leading cause, and the disease worsens over time, making everyday activities increasingly challenging. Chronic cough with mucus Shortness of breath during activities Wheezing Chronic Learn More ](/conditions/copd)[ ### Eczema Skin Eczema is a chronic inflammatory skin condition that causes the skin to become red, itchy, dry, and cracked. Flare-ups can be triggered by allergens, irritants, stress, temperature changes, and certain foods. 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