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Post-Surgical & Complex Pain

Some people keep having pain after an operation or a serious injury. This complex pain often needs a combination of treatments. Here we collect our coverage of long-lasting and hard-to-treat pain.

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Plain-language overview

Understanding Post-Surgical & Complex Pain

What it means

Some people keep having pain after an operation or a serious injury. This complex pain often needs a combination of treatments. Here we collect our coverage of long-lasting and hard-to-treat pain.

Symptoms and warning signs

  • Pain that continues for months after an operation or injury, beyond the expected healing time
  • Back and leg pain that persists or returns after spine surgery (sometimes called failed back surgery syndrome)
  • Burning or shooting pain around a scar, or pain in a limb that has been amputated (phantom limb pain)
  • Pain that spreads, changes character, or is accompanied by sensitivity to light touch
  • Urgent warning signs after surgery: fever, redness, swelling or discharge at the wound, calf pain or swelling, or pain that suddenly becomes much worse

Causes and risk factors

  • Nerves irritated or damaged during surgery or by scar tissue
  • Ongoing joint, disc or nerve problems that the operation did not fully address, or new problems at adjacent levels of the spine
  • Changes in how the nervous system processes pain after prolonged acute pain (sensitisation)
  • Complex regional pain syndrome after an injury or operation to a limb
  • Risk factors reported in research include severe pain before and in the days after surgery, pre-existing chronic pain, anxiety or depression, and certain types of surgery; large studies are under way to understand why acute pain becomes chronic in some people

Conditions in this group

As listed by SEVA Healthcare on its post-surgical & complex pain page.

  • Failed Back Surgery Syndrome (FBSS)
  • Post-surgical nerve pain
  • Chronic regional pain
  • Phantom limb pain
  • Persistent scar pain
  • Neuropathic pain after trauma

How clinicians evaluate it

Specialists review the original surgery or injury, previous treatments and imaging, and look for nerve, joint or muscle causes. Treatment plans for complex pain usually combine several approaches.

Treatments SEVA Healthcare lists

Copied from the official page. Listing a treatment does not mean it suits every patient or is available at every clinic — a doctor decides after an evaluation.

How SEVA Healthcare treats post-surgical & complex pain

When to seek urgent care.

Contact your surgical team promptly for fever, redness or discharge from a wound, or pain that suddenly gets much worse after surgery.

Call 911 or go to an emergency department for severe pain after a fall or crash, chest pain, sudden weakness or numbness, trouble speaking, or loss of bladder or bowel control.

Contact a clinician promptly if pain comes with fever, unexplained weight loss, a history of cancer, or keeps getting worse.

Everyday self-management

General education, not a plan for you. Check with your clinician before changing activity or medicines.

  • Follow the rehabilitation plan after surgery and keep moving within the limits your team sets; prolonged inactivity tends to prolong pain
  • Keep a simple record of pain, sleep and activity to show your team what is improving and what is not
  • Ask early about a plan if pain is not following the expected course — persistent pain is easier to manage when addressed sooner
  • Pacing, sleep routines and stress management support recovery alongside medical treatment
  • Do not stop or change prescribed medicines on your own; discuss any change with the prescriber

Questions to discuss with a clinician

  • Is my pain following a normal recovery course, or is it persisting longer than expected?
  • What is the most likely source of the pain now, and what tests would help?
  • Which options are suitable for me — physical therapy, medicines, nerve procedures, stimulation — and in what order?
  • If spinal cord or nerve stimulation is suggested, how does the trial period work?
  • How do we measure whether treatment is helping — pain, sleep, walking, work?

Frequently asked questions

What is failed back surgery syndrome?

It is a term for back or leg pain that continues or returns after spine surgery. It does not necessarily mean the operation was done badly; the causes vary.

Sources

This overview is general information written by our editors from the official SEVA Healthcare pages and the patient-education sources above. It has not yet been medically reviewed; see our medical review policy. Last updated Oct 16, 2026.

Expert Perspectives

The board-certified pain specialists behind SEVA Healthcare, as listed on the official site.

Meet all our doctors
  • Founder · Board-certified anesthesiologist, pain management

    Dr. Jayen Patel, MD

    American Board of Anesthesiology · MD, Boston University School of Medicine

    I always tell my patients: the trial period exists precisely so you don’t have to take my word for it. You will know within a week whether it works for you.

    Tulsa, OK · Dallas, TX · New Mexico

    View profile
  • Double board-certified in anesthesiology & pain medicine

    Dr. Amit Mirchandani, MD

    Residency: Yale University Hospital · Fellowship: Rush University (pain medicine)

    I see Dallas patients regularly whose knee X-rays look terrible but who have manageable pain — and others whose X-rays look mild but who can’t sleep. The pain isn’t in the image. It’s in the inflammation and the nerve signaling.

    Tulsa & Dallas clinics

    View profile

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