A stress fracture is a small crack in a bone that occurs due to repetitive force or overuse, often seen in athletes or individuals who increase their activity levels suddenly. Common locations for stress fractures include the foot, ankle, and shin. Symptoms typically include localized pain that worsens with activity and improves with rest. Diagnosis usually involves a physical examination and imaging tests like X-rays or MRI. Treatment often includes rest, ice, and possibly a brace or crutches to reduce weight on the affected area. Most stress fractures heal within a few weeks to months with proper care.