Study: Allergies, Asthma, and Reflux Top Culprits in Chronic Cough

Study: Allergies, Asthma, and Reflux Top Culprits in Chronic Cough
The Nemours Foundation

It may be tough to watch and hear your kids cough, but it's actually a healthy and important reflex that helps clear the airways in the throat and chest. Although many childhood coughs are caused by pesky everyday viruses, persistent coughing may be a sign of something more. And a new study shows that three common conditions, in particular, are probably behind lingering coughs in kids.

Researchers from West Jefferson Medical Center in Louisiana ran extensive tests (including X-rays and lung function tests) on 40 kids with chronic coughs that had lasted for more than 8 weeks.

They found that 90% of the cases were most likely caused by:

  • Allergies. An allergy is an overreaction of the immune system to a substance that's harmless to most people. Symptoms can range from minor or major seasonal annoyances (for example, from pollen or certain molds) to year-round problems (from allergens like dust mites or food).
  • Asthma. A chronic lung disease that causes airways to become inflamed, asthma affects more than 20 million people in the United States and is the No. 1 reason why kids chronically miss school.
  • Gastroesophageal reflux disease (GERD). Reflux, when acid from the stomach refluxes into the esophagus, is very common in infants and sometimes occurs in older children. Doctors diagnose GERD when a child's reflux is causing complications, like irritation of the esophagus, poor weight gain, or breathing problems. In some kids, persistent cough can be a symptom of reflux.
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