Calcaneal apophysitis, [KB1] commonly referred to with the misnomer, Sever’s Disease, is a common cause of juvenile heel pain. Affecting children between the ages of 8 and 14 years old, the condition is an inflammation of the heel’s growth plate (the physis), and occurs when stress is put on the developing bone, which only fully develops after the age of 14. Usually, this kind of heel pain does not subside after activity. Calcaneal apophysitis causes considerable pain in the bottom or back of the heel and when the sides of the heel are squeezed. Children suffering from calcaneal apophysitis may limp, walk on their toes, or have difficulty with regular athletic activities. To diagnose calcaneal apophysitis, podiatrists will obtain medical history and ask about recent activities, take X-rays and also evaluate the child’s foot and leg to rule out other causes of injury.