Yellow mucus means your immune system is fighting something — usually a cold or sinus infection — and white blood cells have arrived at the site. Green mucus means the immune response has been working harder and longer; the deeper color comes from dead white blood cells and enzymes they
A medically-grounded guide to telling a normal cough apart from one that needs urgent or emergency care – by the Coppell ER team. When Is a Cough Serious? A cough is serious in adults when it lasts longer than 3 weeks, brings up blood or yellow-green phlegm, is paired with
A cough that lasts longer than 3 weeks usually has one of three causes: postnasal drip from allergies or sinus issues (called upper airway cough syndrome), undiagnosed or uncontrolled asthma, or acid reflux (GERD). Together, these three account for roughly 90% of persistent cough cases in non-smokers. Smokers, post-viral patients,
A 2026, doctor-informed breakdown of what to expect from Day 1 through recovery – and exactly when COVID becomes an emergency. Quick Answer: The COVID Symptoms Timeline in 30 Seconds Most people who catch COVID in 2026 start feeling symptoms 2 to 5 days after exposure. Day 1 to Day
Stomach flu symptoms vary from uncomfortable to genuinely alarming within the same 24-hour stretch. Nausea, vomiting, cramping, and watery diarrhea are the hallmarks of viral gastroenteritis, and for most people the illness is over in a few days. What turns a manageable illness into an ER visit is not the
e coli symptoms can appear days after consuming contaminated food, giving the bacteria time to cause serious internal damage before most people connect what they ate to how they feel. Two multistate outbreaks linked to unpasteurized Raw Farm LLC products, confirmed by CDC investigations, put raw dairy back at the
