Sang Hyun Ahn, MD

Your grandchild develops a runny nose and cough just as local ragweed counts rise. Is this a cold, a ragweed asthma flare, or both? These clues support safer observation but cannot replace an exam. The Quick Answer Itchy eyes and symptoms that repeat after outdoor exposure may fit a pollen trigger. Fever and sore throat are more common with a viral cold. A cold can also trigger asthma, so breathing comfort matters more than choosing a label at home. Check Breathing Before Comparing Symptoms...

Written by Dr. Sam Ahn, MD (Family Medicine Specialist, Medical Contents Director of MoDoc AI) | 2026-03-31 Picture this: It is 11:00 PM. You are winding down when your sleeping child sits bolt upright, eyes wide open, and lets out a terrifying scream. You rush in, but they look right through you and push you away. Take a deep breath. This is likely a "night terror." It feels like a horror movie, but your child is perfectly safe. Affecting about 6.5% of kids, it is a common developmental...

It’s 2:00 AM and the house is silent, except for your crying baby. As you drag yourself out of bed, you might wonder if you are doing something wrong. Rest assured, you are not alone. Night wakings affect 25–50% of babies aged 9 to 12 months. As a doctor and a dad, I want to explain why this happens and how to fix it. The Real Problem: Sleep Association If your baby is healthy and fed, they likely aren't waking up because of hunger. The culprit is usually "Sleep Association." Think of sleep...