Lower body pain affecting your hips, thighs, or legs can come from dozens of different sources, ranging from a hard workout yesterday to chronic conditions that develop over years. About 20.5% of U.S. adults report pain on most days or every day, and the most common locations are the back, hips, knees, and feet. Figuring out what’s behind your pain starts with recognizing the pattern: when it shows up, what makes it worse, and whether it came on suddenly or built up over time.
Muscle Soreness From Overuse
The simplest and most common explanation for lower body pain is that you’ve asked your muscles to do more than they’re used to. Delayed onset muscle soreness (often called DOMS) is a dull, aching sensation that follows unaccustomed physical activity. It typically peaks 24 to 48 hours after exercise and fades by about 72 hours. This is why your legs might feel fine right after a long hike or gym session but hurt significantly the next morning.
Soreness tends to be worst after activities that involve lengthening your muscles under load, like walking downhill, doing squats, or lowering heavy objects. The pain is usually symmetrical, meaning both legs feel similarly sore, and it improves with gentle movement rather than getting worse. If your pain fits this timeline and you can trace it back to a specific activity, it will almost always resolve on its own within a few days.
Nerve Compression and Sciatica
When a disc in your lower spine bulges or herniates, it can press on the nerves that run down into your legs. This is one of the most common reasons for lower body pain that seems to come out of nowhere. The sensation is distinct from muscle soreness: it often feels sharp, electric, or burning, and it typically follows a path from your lower back through your buttock and down one leg.
The exact location of the pain depends on which nerve root is being compressed. Pressure on the nerve root at the L4 level tends to send pain toward the inner ankle and inner foot. Compression at L5 affects the top of the foot, while S1 compression creates pain along the outer ankle and outer foot. You may also notice numbness, tingling, or weakness in these areas. Sciatica usually affects one side, though it’s possible (and more concerning) when both legs are involved.
Joint Pain From Arthritis
If your lower body pain centers on your hips or knees and has been gradually worsening over weeks or months, osteoarthritis is a likely culprit. This happens when the cartilage cushioning your joints wears down over time, causing bone surfaces to rub closer together. The pain is typically mechanical, meaning it flares with activity like walking, climbing stairs, or standing up from a chair, and eases when you rest.
A hallmark of arthritis is morning stiffness. Your hips or knees feel tight and uncomfortable when you first wake up or after sitting for a long stretch. You may hear or feel a grating or catching sensation when you move. Unlike inflammatory conditions that cause stiffness lasting hours, osteoarthritis stiffness usually loosens up within about 30 minutes of getting moving. The condition is progressive, so the pain tends to get a little worse each year without management.
Poor Circulation in the Legs
Peripheral artery disease (PAD) causes a very specific type of lower body pain called claudication. Your leg muscles cramp or ache during physical activity, especially walking, and the pain stops when you rest. This happens because narrowed arteries can’t deliver enough blood to meet the demand of working muscles. A key sign of worsening PAD is that the distance you can walk before pain starts gets progressively shorter over time.
Blood clots in the deep veins of the legs present differently. Deep vein thrombosis (DVT) typically affects one leg and causes swelling, cramping or soreness (often starting in the calf), skin color changes to red or purple, and a feeling of warmth in the affected leg. DVT requires prompt medical attention because a clot can break loose and travel to the lungs.
Inflammatory and Systemic Conditions
Sometimes lower body pain isn’t caused by a single joint or muscle but by your immune system creating widespread inflammation. Polymyalgia rheumatica (PMR) is the most common inflammatory rheumatic disease in people over 50 and is two to three times more common in women. It causes pain and pronounced morning stiffness in the shoulders, hips, and thighs. The onset can be surprisingly fast, developing over just a few days to weeks, and the stiffness is often severe enough to make getting out of bed difficult.
Fibromyalgia produces pain that’s even more widespread. Diagnosis requires generalized pain in at least four of five body regions lasting at least three months, along with tenderness at multiple specific points across the body. People with fibromyalgia often describe pain that shifts locations, accompanied by fatigue, sleep problems, and difficulty concentrating. The lower body is frequently involved, but pain rarely stays limited to just the legs and hips.
How to Read Your Pain Pattern
The characteristics of your pain offer strong clues about its source. Pain that’s symmetrical (affecting both sides equally), dull, and tied to recent activity is most often muscular. Pain that shoots down one leg in a line suggests nerve involvement. Pain that worsens with weight-bearing activity and improves with rest points toward joints or circulation. And pain accompanied by significant morning stiffness, especially if you’re over 50, raises the possibility of an inflammatory condition.
Pay attention to what makes the pain better or worse. Muscle soreness improves with gentle movement. Nerve pain often worsens with sitting or bending forward. Arthritis pain eases with rest but stiffens with inactivity. Vascular pain reliably appears with exertion and disappears within minutes of stopping.
Signs That Need Urgent Attention
Most lower body pain resolves on its own or responds to conservative care, but certain combinations of symptoms signal a medical emergency. Cauda equina syndrome occurs when the bundle of nerves at the base of the spine becomes severely compressed. The red flags include urinary retention (your bladder fills but you don’t feel the urge to go), loss of bowel or bladder control, numbness in the groin and inner thighs (sometimes called saddle numbness), and progressive weakness in one or both legs. This requires emergency evaluation because permanent nerve damage can result without rapid treatment.
Sudden swelling, warmth, and discoloration in one leg, particularly after prolonged immobility like a long flight or recovery from surgery, warrants same-day evaluation for a possible blood clot. And any lower body pain accompanied by sudden inability to move your legs, especially with back pain, needs immediate emergency care.