Sever's disease is a common cause of heel pain in physically active growing kids. It usually occurs during the growth spurt of adolescence, the approximately 2-year period in early puberty when kids grow most rapidly. This growth spurt can begin anytime between the ages of 8 to 13 for girls and 10 to 15 for boys

Causes of Sever's disease

This condition most commonly occurs due to repetitive or prolonged activities placing strain on the heel's growth plate, typically during a period of rapid growth. These activities (or sports) usually involve excessive walking, running, jumping or hopping. Severs disease may also be more likely to occur following a poorly rehabilitated sprained ankle, in patients with poor foot biomechanics or those who use inappropriate footwear. 

Signs and symptoms of Sever's disease

Patients with Sever’s disease typically experience pain that develops gradually in the back of the heel or Achilles region. In less severe cases, patients may only experience an ache or stiffness in the heel that increases with rest (especially at night or first thing in the morning). This typically occurs following activities which require strong or repetitive contraction of the calf muscles, such as running (especially uphill) or during sports involving running, jumping or hopping. Pain may also increase when performing a calf stretch or heel raise (i.e. rising up onto tip toes). 

Prognosis for Severs disease

Sever's disease is a self limiting condition that gradually resolves as the patient moves towards skeletal maturity. This usually takes between 6 to 12 months, but may persist for as long as 2 years. 

Reference:http://www.physioadvisor.com.au/8225752/severs-disease-heel-pain-achilles-pain-treatm.htm

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