Hip pain that wakes you at night or prevents sleep on the affected side is among the most disruptive musculoskeletal symptoms. Unlike daytime hip pain (often triggered by walking or stairs), nighttime pain reveals itself at rest — and the pattern tells you a lot about the cause.
Cause 1: Trochanteric bursitis
The bursa over the outer hip becomes inflamed. Classic pattern: sharp pain when lying on the affected side; relief when lying on the unaffected side. Often tender to direct pressure over the outer hip. Most common cause in middle-aged women, runners, and patients with one leg slightly longer than the other.
Treatment: short course of NSAIDs, ice, side-lying with a pillow between the knees, gradual hip and glute strengthening. Cortisone injection if it persists. Most cases resolve in 4-8 weeks.
Cause 2: Hip osteoarthritis
Pain is deeper, in the groin or front of the hip (not the outer side). Worse with weight-bearing during the day; at night, the pain is more diffuse and present at rest. Often paired with morning stiffness lasting 30+ minutes.
Treatment: depending on severity, ranges from conservative (PT, weight management, NSAIDs, injections) to total hip replacement for advanced cases.
Cause 3: Lumbar spine referred pain
Many 'hip' complaints are actually coming from the lumbar spine. A compressed nerve root can cause pain in the buttock, side of the hip, or down the leg. Often worse at night because of disc swelling during rest.
Clue: if you also have lower back pain or leg pain alongside the 'hip' pain, the spine is a likely contributor. An exam by a spine specialist distinguishes spine-referred from true hip pain — they're easily confused.
Cause 4: Stress or insufficiency fracture
In athletes who train heavily, or older patients with osteoporosis, small cracks in the hip bone produce pain that's worse with weight-bearing AND persists at night during healing. Often present after a period of increased activity or a minor fall.
This requires imaging (X-ray often misses stress fractures; MRI is the gold standard) and is one of the urgent diagnoses not to miss.
Red flags — see a doctor urgently
Hip pain following a fall, even minor, in older patients (rule out fracture).
Hip pain with fever or unexplained weight loss.
Severe hip pain that doesn't ease with any position change.
Inability to bear weight on the affected leg.
Hip pain after recent infection or with night sweats.
What to do tonight, this week
Tonight: avoid lying on the painful side. Use a pillow between your knees if you must lie on the affected side. Try NSAIDs for short-term relief.
This week: track the pattern — which positions hurt, which help, where exactly the pain is. Book a specialist if the pain is severe, has been present more than 2 weeks, or has any red-flag features.
Hip pain is the symptom where patients waste the most time on the wrong diagnosis. The hip joint, the lumbar spine, and the lateral bursa all produce overlapping pain patterns. A proper specialist exam typically figures out which one is the culprit in 10 minutes. — Prof. Dr. Mohamed Kamal, Bone Art Clinic
Frequently Asked Questions
Why does my hip only hurt at night?
Two main reasons: muscle and tendon inflammation increases at rest (no muscle pumping to clear inflammatory fluid), and lying on the affected side compresses the painful area directly. Trochanteric bursitis is the classic night-only hip pain.
Can hip pain be from the spine?
Yes, very commonly. A compressed lumbar nerve can refer pain into the hip area, buttock, and down the leg. Distinguishing spine-referred from true hip pain requires specialist examination — they're often confused.
When is hip replacement necessary?
When hip osteoarthritis is advanced, conservative treatment has been exhausted, and pain or stiffness significantly limits daily life. Imaging shows bone-on-bone or near it. Modern hip replacement is highly successful — 90%+ of implants last 20 years.
Are X-rays enough for hip pain diagnosis?
Weight-bearing X-rays are usually the first imaging — they show arthritis well and pick up most fractures. MRI is needed for soft tissue (bursitis, tears, stress fractures the X-ray missed). A specialist exam decides which is appropriate.