Dear patient one of the reason for acute hip pain may be bursitis but better investigation is ultrasound of hip to diagnose bursitis. Treatment for bursitis is rest and anti inflammatory medications like diclofenac 50 mg twice a day. Traction to involved leg is also advised with ankle traction belt. Antibiotic like cefixime 200 mg twice a day for 5 days should be taken. Visit to orthopedic surgeon is recommended. Mri is very sensitive and specific for diagnosis of hip pathology. hope this is useful.