Compare conditions

Put any two — or three — conditions side by side, adult or pediatric, to spot the look-alike differences fast, row by row.

Chronic Asthma

—

In one line

·Long-lasting swelling inside the breathing tubes makes them twitchy and narrow, causing repeated bouts of wheezing, cough, and hard breathing that get better with medicine.

—

Normal physiology

·Normally the airways—the bronchi (say BRON-kye, the bigger tubes) and bronchioles (the smallest branches)—stay open and their smooth muscle (a band of muscle wrapped around each tube) stays relaxed, so air moves freely into and out of the alveoli (say al-VEE-oh-lye, tiny air sacs where oxygen crosses into the blood). The airway lining is thin, makes just a light coat of mucus to trap dust, and shows no swelling. Keep that picture in mind, because every asthma finding is a change from this baseline.

—

What goes wrong

·Long-lasting swelling in the airway walls—driven by eosinophils (a type of white blood cell), mast cells, and lymphocytes—causes the lining to puff up, mucus glands to overproduce thick sticky gunk, and the smooth muscle to become jumpy and squeeze tight in response to small triggers that would not bother normal airways.

—

Hallmark signs

·Wheezing
·Shortness of breath
·Chest tightness
·Cough (often dry or with thick, sticky mucus)
·Waking up at night coughing or wheezing
·Symptoms triggered or worsened by exercise, cold air, or allergens (pollen, pet dander, dust mites)
·Breathing out takes much longer than breathing in (prolonged expiratory phase)
·Using neck, shoulder, and belly muscles to breathe (accessory muscle use)

—

Red flags · escalate now

·Silent chest on exam (no wheezing heard) despite obvious severe breathing distress — means airways are nearly completely blocked and breathing may stop
·Cannot speak full sentences, or mental confusion, agitation, or extreme drowsiness — signs of dangerously low oxygen or rising carbon dioxide in the blood
·Normal or rising carbon dioxide level (PaCO₂) on a blood gas test — should be low because fast breathing blows off CO₂; normal or high means the breathing muscles are getting tired and about to fail
·History of a previous ICU admission or being put on a breathing machine (intubated) for asthma — marks the person as high-risk for a life-threatening attack
·Poor symptom awareness (the person does not feel how bad their breathing is getting until very late) — delays getting help and raises the risk of sudden collapse

—

Workup

·Spirometry with bronchodilator reversibility testing
·Fractional exhaled nitric oxide (FeNO)
·Home peak expiratory flow (PEF) monitoring for 1 to 2 weeks, morning and evening
·Complete blood count (CBC) with differential
·Serum total IgE level
·Chest X-ray (if the diagnosis is unclear or to rule out complications like pneumonia or a collapsed lung)
·Allergy testing—skin prick test or specific IgE blood test to common environmental allergens (dust mites, pet dander, mold, cockroach, tree pollen, grass pollen, weed pollen)
·Methacholine challenge test (if spirometry is normal but symptoms strongly suggest asthma)

—

Treatment

·Daily low-dose inhaled corticosteroid (ICS) such as fluticasone, budesonide, or beclomethasone—or as-needed ICS-formoterol (combined ICS and fast-acting bronchodilator) for mild asthma
·Short-acting beta-2 agonist (SABA) such as albuterol or levalbuterol, taken at the first sign of symptoms (chest tightness, wheeze, cough, shortness of breath) or 15 minutes before exercise
·Identify and avoid known triggers—allergens (dust mites, pet dander, pollen, mold, cockroach droppings), irritants (tobacco smoke, wood smoke, strong perfumes, cleaning chemicals, air pollution), cold air, exercise without pre-treatment, respiratory infections, NSAIDs (aspirin, ibuprofen, naproxen), and untreated GERD (stomach acid backing up into the food pipe)
·Teach and check correct inhaler technique at every clinic visit, using physical demonstration, teach-back, and a written asthma action plan with pictures
·Add long-acting beta-2 agonist (LABA) such as formoterol or salmeterol, always combined with ICS in a single inhaler (never LABA alone), for moderate to severe persistent asthma when low-dose ICS is not enough
·Add-on biologic therapy—omalizumab (Xolair, blocks IgE), mepolizumab (Nucala) or benralizumab (Fasenra, both block IL-5 or its receptor), or dupilumab (Dupixent, blocks IL-4 receptor alpha)—for severe uncontrolled asthma despite high-dose ICS-LABA and proven good adherence
·Written asthma action plan (daily medicine list, how to spot worsening—dropping peak flow, needing rescue inhaler more often, symptoms waking you at night—when to double ICS, when to start oral steroids, when to call the doctor, when to go to the emergency room) and vaccinations: annual influenza shot, COVID-19 series, and pneumococcal vaccine (PPSV23 or PCV series) per ACIP guidelines

—

NCLEX trap

·Using rescue medicine more than 2 days a week means the swelling inside the breathing tubes is NOT under control. This child needs daily inhaled steroid (medicine breathed straight into the lungs to calm the swelling) to fix the root problem. Rescue medicine only relaxes the tight muscle around the airways for a few hours—it does NOT stop the swelling that keeps coming back. The airways stay inflamed (red, swollen, and making sticky mucus), so symptoms return. Using rescue medicine alone without daily controller medicine is the most dangerous mistake in asthma care. Per NHLBI EPR-3 and GINA guidelines, any child who uses rescue medicine more than twice a week needs daily inhaled corticosteroid started immediately.
·Wheezing (high-pitched whistle when breathing out) that does NOT clear after one rescue dose means the airways are dangerously blocked OR something else serious is happening (severe allergic reaction, pneumonia, object stuck in the airway, collapsed lung). Do NOT keep giving rescue medicine and hope it works. Instead, give oral or IV corticosteroid (prednisone, prednisolone, or methylprednisolone) immediately to reduce airway inflammation, give oxygen if the child's oxygen level is below 90%, and get intensive-care help right away if the child shows signs of breathing failure: too tired to breathe, blue lips or fingernails, confusion, very slow breathing, or trouble speaking. Every minute counts—poor response to rescue medicine is a red flag for life-threatening asthma.
·Persistent asthma means the swelling inside the airways is there every single day, even when the child feels fine and has no cough or wheeze. Daily inhaled corticosteroid (fluticasone, budesonide, or beclomethasone breathed into the lungs) prevents flare-ups by keeping that swelling low all the time. The steroid turns down the immune cells (eosinophils, mast cells, and T-cells) that keep the airways twitchy and inflamed. If you wait and give medicine only when symptoms start, the swelling has already triggered tight squeezing of airway muscle and thick mucus production—you are treating the explosion instead of preventing the fire. Daily controller medicine is the foundation of safe asthma care per NHLBI and GINA standards.
·In persistent asthma, symptoms come and go based on triggers like viruses, pollen, pet dander (tiny flakes of animal skin), cigarette smoke, exercise, or cold air. No wheeze right now does NOT mean the airway swelling is gone—it is still there, waiting for the next trigger. The airways remain hyperreactive (jumpy and quick to tighten) even when symptoms are quiet. This child still needs daily controller medicine (inhaled corticosteroid) and a written asthma action plan that tells the family exactly when to increase medicine, when to use rescue inhaler, and when to go to the emergency room. Asthma is invisible between flares, but the disease is always present. Do NOT be fooled by a calm moment—treat the underlying inflammation.
·Children with persistent asthma CAN and SHOULD play sports. The goal is asthma control: daily inhaled corticosteroid to reduce the baseline swelling, plus rescue inhaler (short-acting beta-2 agonist like albuterol) used 15 minutes before exercise if the child gets symptoms from running or playing hard. When asthma is well-controlled, children can run, jump, swim, and compete safely. Exercise makes lungs and muscles stronger and improves overall health. Many Olympic athletes have asthma and manage it successfully. Never tell a child with asthma to sit out of life—teach the family how to control the disease so the child can do everything. Exercise-induced symptoms mean asthma is NOT controlled and treatment needs to be stepped up.
·Rescue-inhaler overuse—more than once every 4 hours, or more than 2 days per week—is a red flag for life-threatening asthma. The risk of a fatal asthma attack climbs sharply when rescue medicine is used alone without daily inhaled corticosteroid. This child needs urgent provider reassessment TODAY, step-up treatment (start or increase inhaled corticosteroid dose, add a 3-to-5-day burst of oral steroid like prednisone), and close follow-up within 1 to 3 days. Act immediately. Rescue overuse is one of the strongest predictors of death from asthma per national asthma mortality data. Treat this as a medical emergency—do NOT wait to see if it gets better on its own.

—

Install Maldek by Hill as an app — studies work even offline