Disc Bulge or Herniated Disc: What Recovery Usually Looks Like
Quick summary
- A disc bulge on a scan is not automatically the cause of your pain. In people with no back pain, bulges show up in about 30% of 20-year-olds and 84% of 80-year-olds (Brinjikji et al., 2015).
- Herniated disc material often shrinks by itself. A systematic review found regression in about 70% of extrusions and 96% of sequestrations, but only 13% of simple bulges (Chiu et al., 2015).
- Australia's Low Back Pain Clinical Care Standard puts staying active, education and self-management first, and reserves imaging for suspected serious causes (ACSQHC, 2022).
- A few symptoms, such as numbness around the groin or new bladder or bowel changes, need same-day medical care.
"You've got a disc bulge" is one of the most worrying things people hear about their back. It sounds structural and permanent, as if something has slipped out of place and will stay there. For most people the reality is far more reassuring. This article explains what the terms on your scan report mean, what the research says about how discs recover, and what you can do in the meantime, whether you sit at a desk all day or lift for a living.
Bulge, Protrusion, Extrusion: What the Words on Your Report Mean
Each intervertebral disc has a tough outer ring and a softer centre. Radiologists use a sliding scale of terms for how far disc material extends beyond its normal boundary:
- Bulge: the disc extends a little beyond its edges around a broad part of its circumference. This is extremely common and often part of normal ageing.
- Protrusion: a more focal outward push, with the base wider than the part sticking out.
- Extrusion: disc material pushes further out, so the displaced part is wider than its base.
- Sequestration: a fragment has separated from the disc entirely.
When displaced material irritates a nearby nerve root, chemically and mechanically, the result can be leg pain, pins and needles or numbness down the leg, which is commonly called sciatica.
Your Scan Is Not the Whole Story
A large systematic review pooled imaging from more than 3,000 people who had no back pain at all. Disc degeneration was present in 37% of 20-year-olds and 96% of 80-year-olds, and disc bulges in 30% and 84% respectively. The authors concluded that many of these findings are likely part of normal ageing and need to be read alongside a person's actual symptoms (Brinjikji et al., 2015).
That is why Australia's national care standard for low back pain recommends that imaging is reserved for people where a serious cause is suspected, and that the limited role of scans is discussed openly (ACSQHC, 2022). A scan can confirm a disc problem when the clinical picture fits. It cannot, on its own, tell you why you hurt or how you will recover.
Do Herniated Discs Heal?
Often, yes. A systematic review of people treated without surgery, all of whom had repeat imaging, calculated how often herniated disc material shrank over time. Regression was seen in 96% of sequestrations, 70% of extrusions, 41% of protrusions and 13% of bulges. Complete resolution was seen in 43% of sequestrated discs (Chiu et al., 2015).
The counter-intuitive part is that the larger, more dramatic herniations were the most likely to shrink. The leading explanation is that the body treats displaced disc tissue as foreign and gradually clears it. Symptoms and scan appearance don't always change at the same pace, though. Many people feel better well before a follow-up scan would show any change, and some still have symptoms after the disc has shrunk.
For leg pain from an irritated lumbar nerve root, natural history studies summarised in a 2014 review found that around 70% of people improved within the first four weeks (Alentado et al., 2014). Recovery varies widely from person to person, but the general direction is encouraging.
Keeping Going at Work: Desk Jobs and Physical Jobs
The care standard is clear that staying active and continuing usual activities, including work where possible, helps recovery, while bed rest plays a limited role (ACSQHC, 2022). What that looks like depends on your job.
If you sit for most of the day
- Break up sitting every 30 to 45 minutes. A short walk to refill a water bottle counts.
- Vary your position rather than hunting for one "perfect" posture. Alternating sitting and standing often feels better than either alone.
- Walking is usually well tolerated with disc-related pain, and you can build it up in small steps.
If your job is physical
- Ask about modified duties for a short period rather than stopping all work, if that's an option.
- Keep loads closer to your body and give yourself more time for lifting and carrying while symptoms are high.
- Plan a gradual return to full duties. Your back's capacity to tolerate load is rebuilt step by step, not all at once.
How We Approach Disc-Related Pain in Kogarah
An assessment at Spirit Chiropractic starts with your history and a physical and neurological examination: reflexes, sensation, strength, and tests that load the nerve. The aim is to work out whether a disc is a likely contributor, rule out anything that needs medical review, and agree on a plan. That plan usually combines education about what's going on, graded activity and exercise, and manual therapy where it suits you. If imaging, medication or a specialist opinion is needed, we'll coordinate with your GP.
Get medical help the same day if you have:
- numbness or tingling around the groin, buttocks or inner thighs (the "saddle" area)
- new difficulty passing urine, loss of bladder or bowel control, or new sexual dysfunction
- leg weakness that is getting worse, such as a foot that drags or slaps
- back pain with fever, unexplained weight loss, or a history of cancer
These can signal cauda equina syndrome or another serious cause. Go to an emergency department rather than waiting for an appointment.
Back or leg pain that's been put down to a disc?
An assessment can help work out how much the disc is really contributing, and give you a clear plan for staying active and at work while it settles.
Spirit Chiropractic is at Shop 23/6 Belgrave Street, Kogarah. If your GP has put you on a chronic condition management plan, here's how Medicare works for chiropractic.
Request an appointment Call 0410 420 856Frequently Asked Questions
Can a herniated disc heal without surgery?
Often, yes. A systematic review of people treated without surgery found that herniated disc material shrank in about 70% of extrusions and 96% of sequestrations on follow-up imaging. Surgery is still appropriate for some people, such as those with progressive weakness or cauda equina symptoms.
Do I need an MRI for a disc bulge?
Not usually. Australia's Low Back Pain Clinical Care Standard recommends reserving imaging for people where a serious cause is suspected or where the result would change management. Disc bulges are common in people without pain, so a scan doesn't always explain symptoms.
Is it OK to keep working with a disc bulge?
For most people, yes. Staying active and continuing usual activities, including work with modifications if needed, is recommended for recovery. Bed rest has a limited role.
How long does disc-related sciatica take to settle?
It varies. Natural history studies suggest around 70% of people with leg pain from an irritated lumbar nerve root improve within about four weeks, but some take several months. Worsening weakness or bladder and bowel changes need urgent medical review.
Is a bulging disc the same as a slipped disc?
"Slipped disc" is an informal term. Discs don't slip out of place. Depending on how far disc material extends, radiologists describe it as a bulge, protrusion, extrusion or sequestration.
References
- Brinjikji, W., Luetmer, P.H., Comstock, B., et al. (2015). Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. American Journal of Neuroradiology, 36(4), 811–816. https://doi.org/10.3174/ajnr.A4173
- Chiu, C.C., Chuang, T.Y., Chang, K.H., Wu, C.H., Lin, P.W., & Hsu, W.Y. (2015). The probability of spontaneous regression of lumbar herniated disc: a systematic review. Clinical Rehabilitation, 29(2), 184–195. https://doi.org/10.1177/0269215514540919
- Alentado, V.J., Lubelski, D., Steinmetz, M.P., Benzel, E.C., & Mroz, T.E. (2014). Optimal duration of conservative management prior to surgery for cervical and lumbar radiculopathy: a literature review. Global Spine Journal, 4(4), 279–286. https://doi.org/10.1055/s-0034-1387807
- Australian Commission on Safety and Quality in Health Care. (2022). Low Back Pain Clinical Care Standard. Sydney: ACSQHC.
This article is general information, not a diagnosis or a substitute for an individual assessment. If you have new or worsening symptoms, see a registered health practitioner.
