• 26 Oct, 2026
• UnityPain
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CRPS Type 1 vs Type 2 | Unity Pain Modesto CA

When Pain Stays Long After the Injury Is Gone

If you have been dealing with burning, intense pain that just will not go away — even after your injury healed — you are not alone. Complex Regional Pain Syndrome, or CRPS, is one of the most misunderstood pain conditions a person can face. Many people spend months or even years being told their pain is “all in their head” before finally getting answers. You deserve real answers, real support, and real care. Understanding CRPS — and the difference between its two types — is an important first step on that journey.

What Is CRPS?

CRPS stands for Complex Regional Pain Syndrome. It is a chronic pain condition that usually affects one limb — an arm, leg, hand, or foot. The pain is often much stronger than you would expect from the original injury. Along with pain, people with CRPS may notice changes in skin color, skin temperature, and swelling in the affected area. Some people also notice their skin feels very sensitive to light touch or cold air.

CRPS is considered a nervous system disorder. Something goes wrong in the way the brain and nerves process pain signals after an injury or surgery. Instead of pain fading as healing happens, the nervous system stays in a kind of “alarm mode.” This leads to ongoing, often severe pain that can deeply affect daily life, work, sleep, and emotional well-being.

CRPS Type 1 — Pain Without Confirmed Nerve Damage

CRPS Type 1 is the more common form of the condition. It used to be called Reflex Sympathetic Dystrophy, or RSD. In Type 1, the pain and symptoms are not linked to a confirmed injury to a specific nerve. The pain often starts after a minor injury, surgery, or even something like a sprain or fracture. Even though the original injury may have healed, the pain response does not stop.

People with Type 1 may experience burning or throbbing pain, skin that looks red, purple, or pale, changes in skin temperature, swelling, and stiffness in the joints. The limb may feel too sensitive — even a light breeze or gentle touch can feel extremely painful. This is called allodynia. Doctors diagnose Type 1 based on symptoms and clinical exam since there is no clear nerve injury they can point to.

CRPS Type 2 — Pain Linked to a Known Nerve Injury

CRPS Type 2 was formerly called Causalgia. It shares many of the same symptoms as Type 1 — burning pain, skin changes, sensitivity, and swelling. The key difference is that in Type 2, there is a confirmed injury to a specific nerve. This nerve damage can often be seen on nerve conduction studies or confirmed through medical history, such as after a serious injury or surgery that affected a nerve directly.

Even though Type 2 has a clearer cause, the pain can be just as severe — and sometimes even harder to manage. The nervous system’s response still becomes overactive, creating a cycle of pain that goes well beyond the original nerve damage. Both types can dramatically affect quality of life and require careful, thoughtful medical management.

Common Symptoms Shared by Both Types

While CRPS Type 1 and Type 2 differ in their cause, they share many of the same symptoms. Knowing these signs can help you talk to your doctor more clearly about what you are experiencing.

• Burning or throbbing pain — often constant and described as intense
• Allodynia — pain from things that should not hurt, like light touch or clothing
• Skin color changes — skin may look red, blotchy, or pale
• Skin temperature changes — the affected area may feel warmer or cooler than the rest of the body
• Swelling and stiffness — especially in the joints of the affected limb
• Changes in hair and nail growth — these may grow faster or slower in the affected area
• Muscle weakness or difficulty moving the affected limb

These symptoms can come and go, get better over time, or become more severe. Every person’s experience with CRPS is different. If you recognize these symptoms in yourself, speaking with a pain specialist is an important next step.

How Is CRPS Diagnosed and Treated?

There is no single test that definitively diagnoses CRPS. Doctors rely on your symptom history, a physical exam, and sometimes tests like bone scans, nerve studies, or imaging to rule out other conditions. The Budapest Criteria is a widely used clinical tool that helps doctors diagnose CRPS based on reported symptoms and physical signs.

Treatment for CRPS often involves a combination of approaches. These may include medications to help manage nerve pain, physical therapy to keep the limb moving and prevent worsening stiffness, nerve blocks or other interventional procedures, and mental health support. Early diagnosis and treatment tend to lead to better outcomes, though every case is unique. At Unity Pain Management in Modesto, CA, our team takes a compassionate, whole-person approach to pain conditions like CRPS — helping patients explore safe, evidence-based options tailored to their needs.

Finding Support and Moving Forward

Living with CRPS can feel isolating. The pain is real, and so is the emotional toll it takes. It is okay to feel frustrated, scared, or exhausted. What matters most is that you do not have to face it alone. Pain specialists are trained to help people with CRPS find ways to manage symptoms, restore function, and improve quality of life — even when a complete cure is not possible.

If you or someone you love is struggling with unexplained, severe, or long-lasting pain in a limb, please reach out for professional evaluation. A pain management specialist can help determine whether CRPS might be the cause and discuss what treatment options may be appropriate for your situation. Unity Pain Management welcomes patients from Modesto and the surrounding Central Valley area and works with most major insurance plans to make care as accessible as possible.

You have already shown strength by looking for answers. That strength matters — and there are people ready to help you take the next step toward feeling better.

References

• Harden, R. Norman, et al. “Validation of Proposed Diagnostic Criteria (the ‘Budapest Criteria’) for Complex Regional Pain Syndrome.” Pain. 2010.
• National Institute of Neurological Disorders and Stroke. “Complex Regional Pain Syndrome Fact Sheet.” National Institutes of Health. 2023.
• Bruehl, Stephen. “Complex Regional Pain Syndrome.” BMJ. 2015.
• Merskey, Harold, and Nikolai Bogduk, eds. “Classification of Chronic Pain.” International Association for the Study of Pain (IASP). 1994.
• Mayo Clinic Staff. “Complex Regional Pain Syndrome — Symptoms and Causes.” Mayo Clinic. 2023.