Lower back pain: what is typical and what needs checking

You bend down for the laundry basket or to pick a bar off the floor, something bites in your lower back, and you spend the rest of the day moving like a plank. The first question is always the same: will this sort itself out, or do I need to see someone?

The honest answer is reassuring most of the time. But there is a short list of warning signs worth knowing by heart. This guide runs through it in order: what an ordinary back episode looks like, what needs checking, what to actually do from day one, and how to get back to training without repeating the whole thing next month.

What ordinary low back pain looks like

Most low back pain falls into what clinicians call non-specific pain. That means no single structure can be pinned down as the culprit — not a disc, not a nerve, not a fracture. What hurts is an irritated, overloaded muscle and joint system, and that is genuinely all anyone can say. It sounds vague. It is actually good news.

The typical picture: pain sits in the band just above the pelvis, often worse on one side, dull or crampy. Mornings are the worst part, roughly the first twenty minutes after getting up. The first few movements hurt, then five to ten minutes of walking takes the edge off. Coughing and sneezing can catch you. No fever, no numbness down the legs, no weakness.

The timeline is recognisable too. Days three to seven are usually the peak, then the curve heads down. For most people the bulk of the pain clears within two to six weeks. What lingers — occasional stiffness, a back that complains after a long drive — can hang around for months and still means nothing is seriously damaged.

It also comes back. Repeat episodes are the norm, not a failure. That is your back responding to load, sleep, stress and training gaps, not falling apart.

The signs that need a doctor

The list is short. If any of it shows up, do not sit on it:

• Trouble passing urine or controlling your bowels — you cannot go, you cannot feel it happening, or you are leaking.
• Numbness around the groin and inner thighs, the area that would touch a bike saddle.
• Leg weakness that is getting worse — your foot slaps when you walk, you cannot rise onto your toes or heel, you catch your foot on kerbs.
• Fever, chills or a recent infection alongside the back pain.
• Unexplained weight loss, a previous cancer diagnosis, or pain that wakes you at night and eases in no position at all.
• A significant fall, blow or road accident, particularly if you have osteoporosis or have taken corticosteroids for a long stretch.
• Pain running down the leg below the knee lasting more than four to six weeks with no improvement whatsoever.

The first three are not a book-an-appointment-next-Tuesday situation. They need to be seen the same day, at A and E. They are rare, but they are among the few back problems where waiting causes lasting harm.

The rest are for your GP within a sensible window, usually a week or two. And if none of this applies but you are still no better after six weeks, that alone is a reason to get looked at.

The first three days

Keep moving. Bed rest was the standard advice a few decades ago and has since turned out to be worse than simply carrying on. The goal is not to feel nothing, it is to avoid seizing up.

Practically: walk five to ten minutes every two or three hours, even if it is laps of the flat. Change position every 20 to 30 minutes — sitting, standing, walking, lying on your side with knees bent. No single position is bad for you. Staying in one for hours is.

Heat or ice? Take whichever feels better. A heat pack for 15 to 20 minutes tends to suit a spasm, ice suits a fresh strain. Neither changes how fast you recover, but either can take enough edge off that you move more, which is the actual point.

For painkillers, ask a pharmacist or your GP, especially if you take anything else regularly or have a sensitive stomach. Do not stack products on your own, and do not run them for weeks so you can train through the pain.

Week one onwards: load, not rest

Once the sharp peak passes, the aim changes. Now you are rebuilding tolerance to load. Walking is the simplest tool — 20 to 30 minutes a day at a pace where you can still hold a conversation. If that passes without a flare the next morning, push on.

Add a short morning routine: cat-camel for 10 reps, knee-to-chest 8 to 10 per side, then glute bridges for 2 sets of 10. This is not treatment, it is a warm-up that shortens how long you feel stiff after getting out of bed.

If you work at a desk, the biggest early win is changing how often you shift position rather than buying a new chair — the specifics are in the piece on desk work and what actually helps. Breathing tends to fall apart in this phase too, with people bracing and holding their breath to protect the back; sorting that out is covered in the guide to breathing and the diaphragm.

When the pain travels down the leg

Pain that runs from the lower back through the buttock and into the leg, often below the knee, and feels like burning, shooting or pins and needles is a different animal. That is usually an irritated nerve root. The giveaway is that the leg often bothers you more than the back, and sitting or bending forward makes it worse.

The good news is that this also settles on its own most of the time, just more slowly — reckon on six to twelve weeks, sometimes longer. The bad news is that it is a rougher ride and it demands patience. Numbness that comes and goes is not an alarm. Weakness that is progressing is. The difference between harmless tingling and the kind worth investigating is covered in the article on nerves and numbness.

Scans: when they help, when they muddy things

For typical back pain with none of the warning signs above, a scan in the first four to six weeks usually changes nothing about the treatment. The reason is simple: disc bulges, narrowing and so-called degenerative changes turn up very commonly in people with no pain at all, and the proportion climbs with age.

So a report can easily describe something that has been sitting quietly in your back for years and has nothing to do with what hurts today. People who read that report start moving more cautiously, and moving less drags recovery out. Scans earn their place when there is a specific suspicion or when a procedure is being considered — and that is when a doctor will order one anyway.

Getting back in the gym

Do not wait for zero pain. Wait until you can walk normally, sit down and stand up without bracing for it, and sleep through the night. Then start, but half a step back from where you were.

A workable sequence: in week one, stick to work that does not load the spine directly — presses, chest-supported rows, leg press through a range that feels fine. In week two, bring back squats and deadlifts at 40 to 50 per cent of your old working weight, 3 sets of 8 to 10, keeping two or three reps in reserve. If the next morning is quiet, add 5 to 10 per cent.

The rule for judging it: pain up to about 3 out of 10 during a set, settling within an hour and leaving no flare the following day, is acceptable. Anything above that means you skipped a rung. Doing that increase systematically rather than by feel is what the guide to progressive overload is for.

Common mistakes

• Three weeks of complete rest. The fastest way to turn a mild episode into a long one.
• Dropping deadlifts forever. A strong back and hips protect you. The problem was the jump in load, not the lift.
• Training through pain that climbs set by set. Pain that eases as you work is fine. Pain that builds is not.
• Hunting for perfect posture. There is no single correct way to sit or bend, which is the whole argument of the piece on posture and what is actually myth.
• A belt on every set. A belt makes sense on heavy work above roughly 85 per cent, not on warm-ups.
• Reading a scan report as a verdict. Words like degeneration describe your birthday, not damage.

Common questions

It has hurt for two weeks — do I need a scan?

If you have none of the warning signs, probably not. Two weeks is still well within the expected course. If there is no movement at all by six weeks, or the pain is climbing rather than easing, that is when you get seen and let the doctor decide about imaging.

Can I lift while it still hurts?

Yes, with the weight cut. A spine does not need rest, it needs graded load. Start at 40 to 50 per cent of what you were doing, stay in higher rep ranges, and judge it by how you feel the next morning rather than by how set three went.

Does a sharp catch mean a slipped disc?

Usually not. A sharp catch when bending is a very ordinary feature of non-specific back pain and says nothing about severity. A disc pressing on a nerve produces symptoms down the leg, not just a local jab in the lower back.

Is a back belt worth wearing day to day?

Not all day. It can take some discomfort off in the short term, but you do not recover because of it. Under a heavy bar a belt has a job. Outside that you are working against yourself, because your trunk stops doing its own.

The short version

Typical low back pain sits in the band above the pelvis, peaks in the first three to seven days, eases over two to six weeks and comes with no other symptoms. For that kind, you stay mobile, walk 20 to 30 minutes a day, and stay out of bed.

Go to A and E the same day for trouble with urination or bowels, numbness around the groin, or leg weakness that is worsening. See your GP within a week or two for fever, unexplained weight loss, a heavy fall, a past cancer diagnosis, or leg pain that has run past four to six weeks.

Training restarts when you walk normally and sleep through the night, not when the pain hits zero. Come back at 40 to 50 per cent, add 5 to 10 per cent a week, and let the next morning be your judge.