When the mother of two Kristin Fast broke the ACL in her left leg in February 2018, she was told she would need surgery to repair it.
The doctors told the 42-year-old from Phoenix, Arizona, that it would be a simple procedure and that they would take it easy for the next 10 days.
But in the days and weeks after the operation, Fast's leg stayed purple and swollen, and the lightest touch left her with intense pain.
That's when he was diagnosed with a rare nerve condition called Complex Regional Pain Syndrome (CRPS).
The condition allegedly causes the greatest pain that a human being can endure and is known as "suicidal disease" due to the number of people who take their lives after a diagnosis.
The mother of two Kristin Fast, 42 (left and right), from Phoenix, Arizona, broke her LCA in February 2018 and was told she needed surgery. But in the days and weeks that followed, Fast's leg stayed purple and swollen, and the lightest touch left her with severe pain
In April 2018, she was diagnosed with the complex regional pain syndrome, which supposedly causes the greatest pain a human being can endure, and usually develops after an injury or surgery. In the photo: fast
According to the National Organization for Rare Disorders, CRPS usually develops in an arm or leg and after an injury, surgery, heart attack or stroke.
Symptoms include a burning sensation in the affected limb; sensitivity to touch or cold; swelling; and changes in skin temperature, skin color and skin texture.
The cause of CRPS is not well understood, but it is believed that it is because the peripheral and central nervous systems were injured.
Currently there is no known cure, although there are a number of therapies used to control symptoms, including oral and topical analgesics, nerve-blocking drugs and behavioral control therapy.
There are fewer than 200,000 CRPS patients in the US UU With a disease that affects two to five percent of people with peripheral nerve injuries.
Fast says that before her diagnosis in April 2018, she was outgoing and active and that she expected to be awake within two weeks of her surgery.
LIVE IN PAIN: WHAT IS CRPS?
The complex regional pain syndrome usually develops after an injury, often a minor injury.
The pain is often unrelated to the severity of the injury and may be disproportionate to what the patient would expect.
The condition is little known, but some medical experts believe it is caused by damage to the nervous system, which causes the nerves to fail in some way, causing pain.
If left untreated, the pain can also spread to other parts of the body.
Some patients have repeated episodes of pain followed by periods of remission without pain.
It can be treated with physical therapy, to avoid muscle wasting, certain types of analgesics and counseling to help people cope with chronic pain.
"Within six days of surgery, my leg was much worse than expected, not better," he said.
"At that time, my leg had turned purple and became very sensitive to touch, I started sleeping with a" tent "on it because I had become so sensitive to anything that touched my leg.
Fast compares her constant pain with a hot, cold feeling like ice that feels like leaving a hand frozen in cold water for five minutes.
She says that even the splashes of a shower feel as if someone had taken a razor blade on her leg and "cut it well".
If you do not raise your leg, it can get almost black because the blood is not circulating properly. This forces her to be confined to a wheelchair.
Fast also suffers with a bone-tearing pain, muscle pain, cramping and atrophy in the quadriceps, hamstrings and calf.
& # 39; CRPS is the most painful condition known for human existence because there is no escape from pain. It can happen to anyone, at any time, after any injury, "he said.
– Imagine cutting your finger. Imagine the pain Now imagine that it happens to you every second, every minute, every day.
Fast has had four spinal blocks, which include narcotics or an anesthetic that is injected with a needle, in an attempt to block pain, but has not been successful.
In May, he flew to Italy to obtain a test drug called neridronic acid. It is part of a class of drugs called bisphosphonates, which bind to the surface of the bone and stop the breakdown of bones.
Fast compares her constant pain with a hot, cold feeling like ice that feels like leaving a hand frozen in cold water for five minutes. She has been forced to be confined to a wheelchair. In the photo: Fast's legs in February, left, and Fast's legs in April, right
In May, Fast (pictured) flew to Italy in search of a test drug called neridronic acid, which binds to the surface of the bone and stops the degradation of bones. She says she helped with her symptoms
Fast (in the photo, in the wheelchair) has started a non-profit organization called ComplexTruths, Inc., whose goal is to create awareness and money for a cure of the disease.
The medication can take up to a year to work, but Fast says he has seen an improvement in his condition.
Fast has started a nonprofit organization called ComplexTruths, Inc., whose goal is to raise awareness about the cure of the condition, as well as a GoFundMe to raise money for research.
So far, more than $ 21,400 have been raised from a goal of $ 1 million.
"Ultimately, we want to fund research and help others get treatment that they may not be able to afford for themselves," he said.
& # 39; This GoFundMe account will help me improve and help others improve.
"By launching this website and its foundation, I am not only responsible for thousands of people every day but also for myself."
With its foundation, Fast hopes to be an inspiration to others and their two daughters.
"They help me control pain so it can work." They reduce my daily pain levels from twelve to seven or eight, where I can compartmentalize the pain as long as I keep busy, "he said.
"I'm looking for a cure, I'm making a difference and I teach my daughters that a person can have a great impact on the world if they try."