Severs disease is the popular name for a disorder called calcaneal apophysitis. It truly should not be known as Severs “disease” because it is not a disease. It is just a self limiting condition of the growth plate in the heel bone of kids which always goes away completely by itself eventually without long term issues. Severs disease is a really frequent disorder in children around ages 10 to 12 years and if you ask a number of children of that age should they have it or have an acquaintance who may have had it, then most of them probably will say yes. There exists a growth plate at the back of the heel bone where growth of that heel bone occurs at. The achilles tendon attaches to that growth plate, so it is just not hard to see that a great deal of force is placed on that growing area, particularly if the child is overweight or busy in sports activity. The ailment is a overuse of that growing area. The actual growing area merges with the remainder of the heel bone by the early teenage years, so it is just not feasible for it to become a problem after that.
Whilst Severs disease is self-limiting and they'll outgrow this, it is painful and can cause distress so will have to be treated. The best approach is to start with education about the ailment and the ways to manage activity loads to help keep it manageable. It is common to use ice on it after activity to help settle the discomfort. Cushioned gel heel pads are frequently good and may make it more bearable so they can continue with exercise. If you can find biomechanical issues, then correct foot orthotics are usually necesary to fix that. The most important element of the treatment is simply managing the loads. Kids of that age try to be active and engage in sports activity, which means this is often a challenge.