Dear Dr. Gott: In one of your columns a few years ago, you commented on hairballs in humans. We have indoor cats. Dear Reader: Hairballs, also known as trichobezoars, are commonly associated with cats ...

A 16-year-old girl’s mysterious gastrointestinal illness turned out to have an especially hairy culprit behind it. Doctors discovered that a giant hairball stuck in her stomach was the cause of her ...