Complex Regional Pain Syndrome Quiz

Check your symptoms and
find possible causes with AI for free

Reviewed By:

Shohei Harase

Shohei Harase, MD (Neurology)

From our team of 50+ doctors

Please choose the symptom you are most concerned about.

It will help us optimise further questions for you.

By starting the symptom checker, you agree to the Privacy Policy and Terms of Use

Find another symptom

How Ubie can help you

With an easy 3-min questionnaire, Ubie's AI-powered system will generate a free report on possible causes.

Your symptoms

Input your symptoms

Our AI

Our AI checks your symptoms

Your report

You get your personalized report

Personalized Report

✔︎  When to see a doctor

✔︎  What causes your symptoms

✔︎  Treatment information etc.

Just 3 minutes.
Developed by doctors.

Learn more about Complex regional pain syndrome

Content updated on Sep 20, 2022

What is complex regional pain syndrome?

Complex regional pain syndrome (CRPS) is a form of chronic pain that usually affects an arm or a leg. It typically develops after an injury, a surgery, a stroke or a heart attack. The pain is out of proportion to the severity of the initial injury. CRPS is rare, and the cause isn't clearly understood.

Symptoms of complex regional pain syndrome

  • Always in pain

  • Arm pain

  • Thigh pain

  • Swelling of the affected area

  • Swelling of any body part

  • Reduced sweating

  • Numbness or abnormal sensation

Questions your doctor may ask to check for complex regional pain syndrome

Your doctor may ask these questions to diagnose complex regional pain syndrome

  • Are you in pain all the time?

  • Do you have pain in the arms?

  • Do you have thigh pain?

  • Is the affected area swollen?

  • Do you have any swelling in any part of your body?

Treatment for complex regional pain syndrome

Treatment is most effective when started early. Treatment involves medications and therapies such as pain killers, antidepressants, anti-inflammatories, nerve-blocking medication. Therapies include heat therapy, physical therapy, nerve stimulation, spinal cord stimulation, acupuncture, etc.

View the symptoms of Complex regional pain syndrome


  • Bruehl S. Complex regional pain syndrome. BMJ. 2015 Jul 29;351:h2730. doi: 10.1136/bmj.h2730. PMID: 26224572.

  • Kessler A, Yoo M, Calisoff R. Complex regional pain syndrome: An updated comprehensive review. NeuroRehabilitation. 2020;47(3):253-264. doi: 10.3233/NRE-208001. PMID: 32986618.

  • Shim H, Rose J, Halle S, Shekane P. Complex regional pain syndrome: a narrative review for the practising clinician. Br J Anaesth. 2019 Aug;123(2):e424-e433. doi: 10.1016/j.bja.2019.03.030. Epub 2019 May 2. PMID: 31056241; PMCID: PMC6676230.

  • Neumeister MW, Romanelli MR. Complex Regional Pain Syndrome. Clin Plast Surg. 2020 Apr;47(2):305-310. doi: 10.1016/j.cps.2019.12.009. Epub 2020 Jan 31. PMID: 32115056.

  • Urits I, Shen AH, Jones MR, Viswanath O, Kaye AD. Complex Regional Pain Syndrome, Current Concepts and Treatment Options. Curr Pain Headache Rep. 2018 Feb 5;22(2):10. doi: 10.1007/s11916-018-0667-7. PMID: 29404787.

Reviewed By:

Shohei Harase

Shohei Harase, MD (Neurology)

From our team of 50+ doctors

Just 3 minutes.
Developed by doctors.

Ubie is supervised by 50+ medical experts worldwide

Shohei Harase

Shohei Harase, MD


Kameda Medical Center, Japan

Yu Shirai

Yu Shirai, MD


Yotsuya Yui Clinic, Japan

Yoshinori Abe

Yoshinori Abe, MD

Internal medicine

Co-founder of Ubie, Inc.

Rohini R

Rohini R, MD

Ear, nose, throat (ENT)

Bayshore Health Centre, India

Seiji Kanazawa

Seiji Kanazawa, MD, PHD

Obstetrics and gynecology (OBGYN)

National Center for Child Health and Development, Japan

View our medical experts