Some back changes need medical care without delay

Bladder trouble, groin numbness, or weakness needs quick care

Get same-day help if bladder or bowel control suddenly changes. Trouble starting or stopping urine also needs quick care. Numbness around your genitals or inner thighs can mean nerve pressure.

New weakness in your leg or foot isn't routine soreness. A dragging foot or spreading numbness also needs an exam. Don't wait for these changes to settle by themselves.

Go to emergency care when you lose control of urine or bowel movements. You don't need to know which nerve is involved. Tell the care team exactly what changed and when.

Fever, a fall, weight loss, or fixed night soreness needs care

Call for care when back soreness comes with fever or chills. A recent infection makes that more concerning. New soreness after a major fall also needs a check.

Tell the doctor about a cancer history or unexplained weight loss. Report severe night soreness that never changes with position. Pain in your belly or the side between your ribs and hip needs medical advice too.

Watch for clear changes such as fever, chills, weakness, or weight loss. These signs can point to illness, injury, or a problem outside your back. If you're getting worse, call for guidance.

Soreness that limits daily life deserves a regular visit

Arrange an exam when soreness keeps limiting normal tasks. Trouble walking, sleeping, driving, or dressing gives the provider useful facts. Say where the soreness travels and what makes it change.

The provider will ask about your health and medicines. You'll bend and move while your legs are checked. A scan isn't always needed at the first visit.

Bring old records and a short note about when soreness began. Name one task you'd like to do again. Before leaving, make sure you understand the next step.

Sources

1. A systematic review of 14 diagnostic studies evaluating 53 red flags found that MOST red flags endorsed in guidelines change the probability of fracture or malignancy almost not at all. The ones that do carry weight for fracture are a visible contusion or abrasion (62% post-test probability), prolonged corticosteroid use (33%), severe trauma (11%) and older age (9%); for malignancy it is a history of malignancy (33%). Probability of fracture rises to 90% when multiple red flags are present together.

   Downie A, Williams CM, Henschke N, et al. — Red flags to screen for malignancy and fracture in patients with low back pain: systematic review.. BMJ, 2013. DOI: 10.1136/bmj.f7095.

2. The Lancet low back pain series states that for nearly all people with low back pain it is NOT possible to identify a specific nociceptive cause; only a small proportion have a well-understood pathological cause such as vertebral fracture, malignancy or infection. Most new episodes recover quickly, recurrence is common, and in a small proportion the pain becomes persistent and disabling - with initial high pain intensity, psychological distress and pain at multiple body sites raising that risk.

   Hartvigsen J, Hancock MJ, Kongsted A, et al. — What low back pain is and why we need to pay attention.. The Lancet, 2018. DOI: 10.1016/S0140-6736(18)30480-X.

3. The RESTORE trial randomised 492 people with chronic disabling low back pain across 20 primary-care physiotherapy clinics to usual care, cognitive functional therapy, or cognitive functional therapy with movement-sensor biofeedback. Both therapy arms produced a 4.6-point improvement on the 24-point Roland Morris Disability Questionnaire versus usual care at 13 weeks, with similar effect sizes still present at 52 weeks and substantially lower societal costs. Adding the sensor added nothing.

   Kent P, Haines T, O'Sullivan P, et al. — Cognitive functional therapy with or without movement sensor biofeedback versus usual care for chronic, disabling low back pain (RESTORE): a randomised, controlled, three-arm, parallel group, phase 3, clinical trial.. The Lancet, 2023. DOI: 10.1016/S0140-6736(23)00441-5.

4. The 2025 ASIPP regenerative-therapy guideline for chronic low back pain - written by the specialty society that performs these procedures - grades the evidence as Level III (fair) for intradiscal PRP, Level III (fair) for intradiscal bone marrow concentrate, Level III (fair) for epidural PRP, Level IV (limited) for facet joint PRP and MSC injections, Level IV (limited) for sacroiliac joint PRP, and very low for functional-spine-unit injections. All 19 recommendations are consensus-based rather than evidence-driven, the panel names the scarcity of high-quality studies as the primary limitation, and it states that most of these therapies are not covered by commercial insurance.

   Manchikanti L, Navani R, Navani A, et al. — Comprehensive Evidence-Based Guidelines for Regenerative Therapies in the Management of Chronic Low Back Pain: 2025 Update from the American Society Of Interventional Pain Physicians (ASIPP).. Pain Physician, 2025.