Hello There,
In this condition first of all restrict the leg movement and walking as much as possible. Secure the affected Ankle with 'Ankle Cap' to avoid swelling and major complications like ligament tear. Hot water Fomentation would give much relief. Elevate the affected leg approx 12-15 inches while sleeping by keeping 2-3 pillows below it; to reduce the swelling.
Some NSAID and Muscle relaxant medications would cure the condition.
Next Steps
Visit to Orthopedic consultant soon for diagnosis and treatment.
Health Tips
Restrict afected leg movement.