What is the recommended treatment for a stress fracture? what if you don't treat it?

Relative Rest: Stress fractures are overuse injuries. Mainstay of treatment is rest. Requires athlete's injury be placed in whatever is necessary to eliminate pain. Casting/crutches for le injuries may be necessary. In some activity modification without bracing or immobilization may suffice. Underlying hormonal, vitamin deficiencies corrected. Training errors identified. If untreated may progress to fracture.

Stress fracture: Rest, avoid weight bearing exercise on the fracture, ice and anti-inflammatory medications.