How common each one is, who gets it, how long it lasts, what it costs, and whether you can have both at once. Every number below comes from a federal health agency or a university research center, and each one is labeled with its source and year.
🕑 Last verified against CDC.gov and NIH.gov: October 11, 2026Arthritis and sciatica both get blamed for "back and leg pain," so people mix them up all the time. But the numbers tell two very different stories. Arthritis is a long-term joint disease that about 1 in 5 American adults live with right now. Sciatica is nerve pain that shoots down the leg, and while somewhere between 10% and 40% of people will deal with it at some point in life, most episodes clear up within weeks.
Here's the quick comparison before we dig into each number.
| Measure | Arthritis pain | Sciatica pain |
|---|---|---|
| What hurts | Joints and the tissue around them (knees, hips, hands, spine) | The sciatic nerve path: low back, buttock and down one leg |
| How many people | 53.2 million U.S. adults (21.2%), 2019 to 2021 | 10% to 40% lifetime; 1% to 5% in any given year |
| Who it hits hardest | 88.3% of cases are in adults 45 and older | Peaks in the 40s; rare before age 20 |
| Women vs. men | More common in women (20.9% vs. 16.3%) | No clear difference between sexes |
| Most common cause | Osteoarthritis (32.5 million adults) | A herniated or bulging lumbar disc |
| Typical course | Chronic and long-term | Most cases resolve in under 4 to 6 weeks |
| National cost estimate | $303.5 billion a year (2013) | No federal estimate published |
Sources: CDC MMWR 2023; CDC Chronic Disease Indicators; NIH National Library of Medicine (StatPearls: Sciatica); UNC Osteoarthritis Action Alliance. Full list in About this data.
Arthritis is more common on any given day, by a wide margin. The CDC's National Health Interview Survey found that 21.2% of U.S. adults, about 53.2 million people, reported a doctor's diagnosis of arthritis between 2019 and 2021.
Sciatica works differently. It tends to come and go, so researchers measure it two ways. Over a whole lifetime, 10% to 40% of people experience it. In any single year, 1% to 5% develop it. Apply that yearly rate to the roughly 258 million American adults and you get somewhere around 2.6 million to 13 million new cases a year. That last figure is our own math, not a government count, because no federal agency tracks sciatica the way the CDC tracks arthritis.
For context on how often these complaints show up overall, the CDC's National Center for Health Statistics found that in 2019, 39.0% of adults had back pain and 36.5% had lower limb pain in the previous three months. Both arthritis and sciatica feed into those two buckets, which is a big reason people struggle to tell them apart.
Age is where the two conditions split most clearly. Arthritis builds slowly and is mostly a condition of middle age and later life. Sciatica hits earlier, often in people who are still working full time and lifting, driving or sitting for long stretches.
Sciatica tells a different story. According to the NIH's StatPearls review, it peaks in people in their 40s, rarely shows up before age 20 unless there's been an injury, and shows no clear preference for men or women. Jobs matter too. Machine operators, truck drivers and people who work in awkward positions show higher rates.
Arthritis, on the other hand, leans female. Age-adjusted rates were 20.9% for women and 16.3% for men, and veterans had higher rates (24.2%) than non-veterans (18.5%).
This is where the comparison gets honest. The CDC tracks arthritis pain closely. Nobody tracks sciatica pain at the national level in the same way, so there's no official head-to-head pain score. What we can show is how big the arthritis burden is, and what the medical literature says about sciatica.
A few more numbers put that in perspective. Adults with arthritis reported 180.9 million lost workdays from 2013 to 2015, which was 34% of all workdays lost to any medical condition. In 2013, adults with arthritis made up 53% of all U.S. adults taking prescribed opioids. And the total cost of arthritis, counting medical care and lost wages, was $303.5 billion that year.
Sciatica is described in the NIH literature as a "debilitating" condition, and the pain can be intense enough to stop people from walking or sitting. The difference is duration. Most sciatica flares are short, while arthritis pain tends to stick around for years. When sciatica does become chronic, though, outcomes get harder: the NIH review notes many long-term sufferers deal with recurring pain even after surgery.
The statistics only help if you can tell which one you're dealing with. The type of pain is usually the biggest clue.
There's one pattern worth knowing about. When arthritis in the spine narrows the space around the nerves (spinal stenosis), the NIH says the leg pain typically gets worse with standing or walking and eases when you lean forward. Classic disc-related sciatica often does the opposite and flares when you bend. That small detail helps a provider sort out what's really going on. If your leg pain is the main problem, the sciatica page covers it in more depth, and joint pain in the knee is covered on the knee pain page.
The NIH's National Institute of Arthritis and Musculoskeletal and Skin Diseases lists arthritis as a common cause of spinal stenosis. Osteoarthritis can wear down the discs and cause overgrowth of bone that narrows the canals the nerves pass through. The NIH sciatica review backs this up from the other side: while a herniated disc is the top cause overall, in older patients, lumbar spinal stenosis can cause sciatica symptoms too.
There are really three ways the two can overlap:
This overlap is why a proper exam matters more than guessing from symptoms. Treating only the joint pain when a nerve is also pinched, or the other way around, leaves half the problem untouched.
Most people with sciatica get better without long-term problems. The NIH review says most cases resolve in less than 4 to 6 weeks, even without treatment. Recovery takes longer when there's nerve damage, and poor work mechanics, depression and financial stress all raise the odds of sciatica coming back.
Arthritis follows a slower, longer path, and the numbers are growing. CDC researchers project the count of U.S. adults with arthritis will rise sharply as the population ages.
If back pain is your main complaint and you're not sure where it's coming from, the back pain page is a good next read.
Yes. They can exist side by side, and spinal osteoarthritis can actually cause sciatica. According to the NIH, arthritis is a common cause of spinal stenosis, a narrowing that can press on the nerve roots that form the sciatic nerve.
Arthritis. About 53.2 million U.S. adults (21.2%) have diagnosed arthritis, per the CDC. Sciatica affects 1% to 5% of people in a given year, though 10% to 40% will have it at some point in their lives.
There's no federal study that rates them on the same pain scale. Sciatica can be sharp and intense, but most cases clear up within 4 to 6 weeks. Arthritis pain tends to last for years, and about 1 in 4 adults with arthritis report severe joint pain of 7 or higher on a 10-point scale.
It can. Osteoarthritis can lead to disc wear and bone overgrowth that narrows the spaces nerves pass through. When those nerves are squeezed, burning or shooting pain can travel down the leg, which is sciatica.
Sciatica usually runs from the low back or buttock down one leg and often comes with tingling or numbness. Hip arthritis tends to ache in and around the hip joint and feels stiff. Because the two can overlap or mimic each other, an in-person exam is the reliable way to know.
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