💡TL;DR: Shortness of breath when you lie flat is called orthopnea and it usually points to a heart or lung issue that needs checking. If it eases when you sit up or you need two or more pillows to sleep, schedule a medical visit; sudden or severe symptoms are

💡TL;DR: Use your incentive spirometer often after surgery to keep your lungs open and clear. In the hospital, do about 10 slow breaths every hour while you’re awake; at home, do about 10 every 2 hours for the first week. Most people can stop after 1–2 weeks

💡TL;DR: Allergic asthma is triggered by allergens like pollen or dust mites, while non-allergic asthma flares with things like viral infections, cold air, smoke, strong odors, or exercise. The symptoms feel the same; the difference is the trigger, and allergic asthma more often starts in childhood while non-allergic asthma

💡TL;DR: Hemoptysis = blood with a cough from the lungs; hematemesis = blood with vomiting from the stomach or esophagus. Look for bright, frothy blood in mucus during a cough versus dark coffee‑ground or bright red blood mixed with food after nausea. Any vomiting of blood warrants emergency care; coughing

💡TL;DR: Epiglottitis is a sudden, bacterial throat infection that can block the airway within hours and needs emergency care, while croup is a common viral illness with a barky cough that usually improves in 3–4 days with calm care and a single steroid dose from your doctor. Look

💡TL;DR: Yes, pneumonia can be contagious when it is caused by a virus or bacteria, and it spreads at close range in cough and sneeze droplets. Viral cases are contagious for several days. Bacterial cases usually stop spreading about 24–48 hours after effective antibiotics. Walking pneumonia (Mycoplasma) can

💡TL;DR: A peak flow meter is a small home tool that shows how open your airways are by measuring how fast you can blow out (L/min). Check it daily and compare the highest of 3 blows to your personal best to guide your asthma action plan. Green 80–

💡TL;DR: Stridor is a harsh, high‑pitched sound on inhale from the upper airway; wheezing is a musical whistle on exhale from the lungs. Location (throat vs chest) and timing (in vs out) are the fastest ways to tell them apart. Stridor at rest, blue lips, or trouble swallowing

💡TL;DR: Bronchitis irritates the airways and is usually viral; pneumonia infects the lung's air sacs and tends to be more severe. Expect bronchitis to improve in 1–3 weeks and pneumonia to take 1–2+ weeks, with fatigue lingering. Antibiotics usually don't help acute bronchitis,