Back Pain: Causes, Treatment and When to See a Doctor

Back pain is one of those things almost everyone runs into eventually. One awkward lift, a long drive up the Hume, a week hunched over a laptop at the kitchen bench, and suddenly getting out of bed needs a strategy. If pain is affecting your sleep or your ability to work, an online doctor consultation with an AHPRA-registered GP is a practical place to start.

The reassuring part is that most episodes are not serious, and most people find low back pain improves within a few weeks with simple self-management. This guide covers what causes back pain, how lower and upper back pain differ, the warning signs that need urgent attention, and the treatment approaches supported by current evidence.

What causes back pain?

Here is what surprises most people: in the majority of cases, no single structure can be pinpointed as the cause. Doctors call this non-specific back pain, usually involving irritated or overloaded muscles, ligaments, joints and discs.

So when people ask what causes back pain, the more useful answer is usually what contributes to it:

• Lifting, twisting or bending awkwardly, especially under load or when fatigued
• Long periods sitting or standing in one position
• A sudden jump in physical activity after a quiet stretch
• Poor sleep, which lowers pain tolerance and slows recovery
• Stress and low mood, which genuinely affect how pain is processed

A smaller share of back pain has a specific, identifiable cause, such as nerve compression, a fracture, inflammatory arthritis, infection or, rarely, cancer. Part of a doctor’s job is screening for those less common causes so they are not missed. Where infection or inflammation is suspected, your GP may arrange a pathology referral for blood tests.

Lower back pain: the most common type

Low back pain affects the lumbar spine, the curved section between the bottom of your ribs and the top of your buttocks. It carries most of your upper body weight and does most of the bending. Back pain in the lower spine is also the version most likely to spread into the buttock or down one leg.

Lower back pain causes worth knowing

The most common pain in lower back causes include:

• Muscle or ligament strain, often after lifting, gardening or a sudden movement
• Disc-related pain, where an intervertebral disc bulges and irritates nearby tissue
• Sciatica, where an irritated nerve root sends pain, tingling or numbness down the leg
• Facet joint irritation in the small joints at the back of each vertebra
• Spinal stenosis, a narrowing that can cause leg pain when walking
• Pregnancy, due to weight changes, posture shifts and hormonal effects on ligaments

Worth knowing: age-related changes such as disc wear show up on scans in many people with no pain at all, which is one reason imaging is not routinely needed.

Pain in the bottom left side of your back

Searching for back bottom left side pain usually means the pain sits on one side, just above the buttock. Most of the time this is still musculoskeletal: a strained muscle, an irritated sacroiliac joint where the spine meets the pelvis, or sciatica affecting one side.

One-sided pain slightly higher up, towards the flank, deserves more attention. Kidney stones, kidney infections and some bowel or gynaecological conditions can cause pain here. Pain in waves, or with fever, burning urination, blood in the urine or nausea, points away from a muscle problem and should be assessed promptly.

Upper back pain: less common, worth taking seriously

Upper back pain affects the thoracic spine, between the base of the neck and the bottom of the ribcage. Braced by the ribs, it moves far less than the lower back and is injured less often.

When it does happen, the usual culprits are sustained desk posture, repetitive overhead work, muscle strain, and irritation of the joints where the ribs meet the spine.

Because the upper back sits near the heart, lungs and major blood vessels, pain here occasionally comes from somewhere other than the spine. Upper back pain that arrives with chest pain, shortness of breath, sweating or pain spreading into the arm or jaw needs emergency care, not a wait-and-see approach.

Warning signs that need urgent care

Call 000 or go to your nearest emergency department if back pain comes with any of the following:

• Numbness around the groin, buttocks or inner thighs
• New difficulty controlling your bladder or bowels
• Weakness in one or both legs that is getting worse
• Chest pain, shortness of breath, or pain spreading into the arm or jaw
• Back pain following a significant fall, accident or impact

See a doctor within a day or two if back pain comes with fever, unexplained weight loss, a history of cancer, severe pain that is worse at night and unaffected by position, or if you are over 50 and this is a new pattern for you. Telehealth is not suitable for the emergency signs above; those need in-person assessment.

Back pain treatment: what the evidence supports

Good back pain treatment starts with assessment rather than a scan or a script. A doctor will want to know how the pain started, where it goes, what changes it, and whether any warning signs are present.

From there, care for most people centres on a few consistent principles:

• Staying active and continuing usual activities, including work, as far as you reasonably can
• A self-management plan built around your own situation and goals
• Imaging only where warning signs or specific findings justify it, rather than as a routine first step
• Medicines, where used, chosen case by case by a doctor as one part of a broader plan, not the whole plan
• Referral where the pain is not settling or a specific cause needs further investigation

If your GP decides more assessment is warranted, they can arrange a specialist referral for further investigation after your consultation. Surgery is rarely needed for back pain and is generally reserved for specific conditions, such as significant nerve compression, rather than general back pain.

Physical therapy treatment for back pain

Physiotherapy, also known as physical therapy, is one of the most common and well-supported parts of back pain care. A physiotherapist assesses how you move, then builds a plan that may include graded exercise, pain education, activity pacing, hands-on techniques as a supporting measure, and a structured return to work or sport.

You can generally see a physiotherapist in Australia without a GP referral, although having your GP involved helps keep care coordinated,. If appointments clash with work hours, you can request a certificate for physiotherapy or orthopaedic appointments to support your leave.

Back pain relief at home: what tends to help

No single trick works for everyone, but these general self-care measures are widely recommended and may help some people feel more comfortable while recovering:

• Keep moving. Short, regular walks usually beat lying down for days
• Avoid prolonged bed rest, which tends to slow recovery
• Change position often, and set a timer if you sit for long stretches
• Try gentle heat, which some people find soothing for muscle tension
• Sleep on your side with a pillow between your knees, or on your back with one under them
• Build back into lifting gradually, keeping loads close to your body
• Speak with a pharmacist or doctor before using any pain relief medicines, particularly if you take other medicines or have other health conditions

When back pain becomes a longer-term problem

Back pain lasting beyond about three months is considered chronic, and it often affects sleep, mood and work as much as the back itself. Ongoing care usually involves several health professionals working together, alongside supported self-management. If that means regular appointments during work hours, a certificate for specialist and allied health appointments can help document the time away.

Persistent pain and low mood tend to feed off each other. If back pain is wearing you down, ask your GP whether a GP mental health plan could form part of your care.

Getting back pain assessed online

Most of a back pain assessment is conversation: when it started, where it travels, what eases it and what aggravates it. That makes telehealth a practical first step, especially when sitting in a waiting room is the last thing you want. A GP can review your history, screen for warning signs, and arrange referrals where needed.

Telehealth does have limits: a hands-on physical examination is not possible remotely, and the doctor will advise if one is needed.

Bulk billed GP consultations are available for eligible patients.

If you would like to read further, the Australian Commission on Safety and Quality in Health Care sets out what good care should look like in its national Low Back Pain Clinical Care Standard for patients, and Painaustralia explains the multidisciplinary approach to managing chronic back pain for pain that has lasted longer than a few months.