Sever's disease, also known as calcaneal apophysitis, manifests as pain and tenderness in the heel, specifically at the back where the Achilles tendon attaches to the heel bone. This condition primarily affects children and adolescents who are undergoing growth spurts, as it results from inflammation of the growth plate in the heel. The pain often worsens with physical activity, such as running or jumping, and can be particularly pronounced after exercise or periods of rest.

Patients with Sever's disease may experience heel pain that limits their ability to participate in sports or other activities, leading to discomfort and a reluctance to engage in physical exercise. The condition can also cause swelling and tenderness in the heel area, and patients might walk with a noticeable limp to avoid putting pressure on the painful spot. Treatment typically involves reducing activity levels, applying ice, and using heel pads or orthotic devices to cushion and support the heel. Stretching exercises for the Achilles tendon and calf muscles can also help alleviate symptoms and promote recovery.