Buttock pain most commonly comes from muscle strain, nerve irritation, or joint problems, and the specific location and behavior of your pain can help narrow down the cause. Pain that’s worse when sitting points to different structures than pain that flares when walking or climbing stairs. Here’s what might be going on and how to tell the difference.
Muscle Strain and Overuse
The gluteal muscles are some of the largest and most heavily used muscles in your body, and they’re a common source of buttock pain. Straining the gluteus maximus, gluteus medius, or gluteus minimus can happen during exercise, heavy lifting, or even from prolonged sitting that weakens the muscles over time. The pain is usually a broad, achy soreness that worsens with movement and improves with rest.
Hamstring problems are another frequent culprit. Your hamstring tendons attach at the base of your pelvis, right at the “sit bones” you rest on when seated. A strained or partially torn hamstring can cause pain that feels like it’s deep in the buttock, especially when bending forward or running. This type of pain often gets mistaken for a nerve issue because of how deep it feels.
Sitting Pain and Ischial Bursitis
If your buttocks hurt specifically when you sit, especially on hard surfaces, ischial bursitis is a likely explanation. Your sit bones (the two U-shaped bones at the bottom of your pelvis) have small fluid-filled cushions called bursae that reduce friction. Repetitive pressure from prolonged sitting or activities like cycling can irritate these cushions, causing a dull, deep ache around the sit bones that gets worse with continued sitting or exercise.
Tailbone pain, called coccydynia, is a related but distinct problem. This pain is centered lower and further back than ischial bursitis, right at the base of the spine. It’s often linked to a fall, a difficult childbirth, or prolonged pressure on the tailbone. The key difference: coccydynia hurts most when you lean back while seated, while ischial bursitis hurts more when you’re sitting upright directly on the sit bones.
Piriformis Syndrome
The piriformis is a small muscle deep in your buttock that runs over the sciatic nerve. When this muscle spasms or tightens, it can compress the nerve and create a pain that starts deep in one buttock and may spread into the upper thigh. In most cases, piriformis-related pain does not extend below the knee.
Certain activities make piriformis syndrome noticeably worse: sitting for long periods, climbing stairs, getting in and out of a car, or anything involving hip rotation. You might also feel localized tenderness when pressing into the center of the affected buttock, along with tingling that starts in the hip rather than the lower back. A physical therapist can test for this by flexing your hip, rotating it inward, and pressing the knee down. If that reproduces your pain, the piriformis is likely involved.
Sciatica From the Lower Back
True sciatica originates in the lumbar spine, where a herniated disc, bone spur, or narrowed spinal canal compresses a nerve root before it becomes the sciatic nerve. The pain often starts in the lower back, travels through the buttock, and radiates all the way down the back of the calf and into the foot, following the nerve pathway.
This is the main way to distinguish sciatica from piriformis syndrome. Sciatica frequently causes numbness, weakness, or changes in reflexes along the leg, and it tends to worsen with spinal movements like bending forward, prolonged standing, or sneezing. Piriformis syndrome, by contrast, is provoked by hip movements and rarely extends below the knee. Both cause buttock pain, but the pain travels differently and responds to different triggers.
Deep Gluteal Syndrome
Deep gluteal syndrome is an umbrella term for several conditions where the sciatic nerve gets trapped or compressed somewhere in the deep tissue of the buttock. The piriformis is the most well-known compression site, but it’s not the only one. The sciatic nerve can also be pinched by other small hip rotator muscles, by fibrous bands of tissue, or by the space between the sit bone and the thighbone narrowing after trauma or surgery.
Hamstring injuries can contribute too. A detached or damaged hamstring tendon near its attachment point on the pelvis can create scar tissue or swelling that squeezes the sciatic nerve during hip movement. This is sometimes called hamstring syndrome. The common thread across all these variations is sciatic nerve irritation that originates in the buttock rather than the spine, producing deep pain that may radiate down the leg.
Sacroiliac Joint Dysfunction
The sacroiliac joints sit where your spine meets your pelvis, one on each side. When these joints move too much or too little, they can generate pain that’s easy to confuse with other causes. If the joint is too stiff, pain is typically felt on one side of the lower back or buttock and can radiate down the leg, usually staying above the knee but occasionally reaching the ankle or foot. If the joint is too loose (common during pregnancy or after injury), the pain tends to center in the lower back and hip and may spread into the groin.
Sacroiliac pain often worsens with transitions: standing up from a chair, rolling over in bed, or climbing stairs. It can also flare during long periods of standing on one leg. The one-sided nature of the pain is a helpful clue, since many other causes of buttock pain share this feature but sacroiliac dysfunction tends to be very specifically localized to one side.
Exercises That Help
For muscle-related and tendon-related buttock pain, a progressive loading program can make a significant difference. The general approach starts gentle and builds over about eight weeks.
- Weeks 1 to 3: Start with isometric exercises (muscle activation without movement). A simple one is lying on your back with a pillow under your knees and a belt looped above them, then gently pressing your legs apart into the belt’s resistance. Hold for 5 seconds, repeat 5 to 10 times, and do this 2 to 3 times per day. You can add double-leg bridges by week 2, holding for 3 to 5 seconds, 5 to 10 repetitions.
- Weeks 4 to 6: Progress to single-leg bridges, squats with a resistance band around the knees, and half-squats on one leg. Perform these every other day rather than daily, as the muscles need recovery time under heavier loads.
- Weeks 7 to 8: Continue with single-leg exercises every other day, increasing repetitions or resistance as tolerated.
The key principle is that tendon and muscle pain in the buttock responds better to gradual loading than to complete rest. Avoiding all activity can actually slow recovery by allowing the tissues to weaken further. If an exercise increases your pain significantly during or after, scale back to the previous level rather than pushing through.
When Buttock Pain Is an Emergency
Rarely, buttock pain signals a serious condition called cauda equina syndrome, where the bundle of nerves at the base of the spinal cord becomes severely compressed. This requires immediate medical attention. The red flags to watch for are specific and distinct from ordinary buttock pain:
- Bladder changes: Your bladder fills but you don’t feel the urge to urinate, or you lose control of urination
- Bowel incontinence: Loss of control over bowel movements
- Saddle numbness: Loss of sensation in the area that would contact a saddle, including the groin, inner thighs, and buttocks
- Progressive leg weakness: Weakness or paralysis in one or both legs that’s getting worse
- Sexual dysfunction: Sudden loss of sensation or function
Any combination of these symptoms alongside buttock or back pain warrants a trip to the emergency room. Cauda equina syndrome is rare, but delayed treatment can lead to permanent nerve damage. Ordinary buttock pain from muscles, tendons, or joints does not cause bladder or bowel problems.