Not just "pain that won't go away," and not something that shows up clearly on every scan, reflex sympathetic dystrophy is an older name for a chronic nerve-related pain condition now often called complex regional pain syndrome or CRPS. It usually develops after an injury, surgery, or other trauma and can cause burning pain, swelling, skin color or temperature changes, unusual sweating, stiffness, and extreme sensitivity to touch. In some people, the symptoms are far worse than the original injury would seem to explain.

That mismatch is one reason the condition matters so much after a crash or other accident. A person may have started with what looked like a broken wrist, a hand injury, or soft-tissue damage, then ended up with long-term pain and limited use of an arm or leg. Medical records, pain management notes, and specialist opinions often become central evidence because the condition can be misunderstood or minimized by insurance adjusters.

For an injury claim, reflex sympathetic dystrophy can affect the value of damages, future medical care, lost income, and pain-related limitations in daily life. In Arizona, auto claims may also run into the state's mandatory liability insurance minimums of 25/50/15, which can be inadequate when a crash leads to a serious, ongoing condition like this. Clear diagnosis, consistent treatment, and documented symptoms can make a major difference in proving causation and the full extent of harm.