Pain in your hip can be located on your sides or where your leg and hip meet, and can range from mild to severe depending on the cause. Hip pain at night may cause you to have difficulty falling or staying asleep, and prolonged pain may require a medical evaluation. According to the National Library of Medicine and the Mayo Clinic, causes of hip pain at night include injuries and joint disorders.
Avascular necrosis is a progressive condition that involves the death of your bone tissue. It is more common in weight-bearing joints such as the hip, and it can cause persistent pain.
An inflammation or infection of the bursae of your hip joint may cause you to experience hip pain at night; the pain can be worsened by certain sleeping positions.
A dislocation of your hip may result from an injury such as a fall, and may cause you to have pain at night, especially if you sleep lying on your side. If you have dislocated your hip, you will be unable to move the leg properly and will need to seek immediate medical attention. After your hip is reduced, or put back into place, you may still experience pain from the injury.
Osteoarthritis in your hip joint may cause you to experience hip pain at any time of the day or night, especially when putting weight or pressure on the hip joint.
Women, especially after menopause, may develop osteoporosis in the hip, which can cause hip pain at night as well as during physical activity. Osteoporosis is the loss of bone density over time.
Sciatica is a condition caused by inflammation of your sciatic nerve, and it may cause hip pain at night if you sleep lying on your back.