(CRPS) is defined by long periods of excessive pain, changes in skin color, temperature, and swelling.
The reason why it grows after some injuries but not others is not recognized even though the state can usually be followed to an injury in the region.
The pain is reported to feel like the affected limb is crushing or squeezing.
In some instances, the pain may even transfer to the contrary limb, and just the lightest touch can trigger severe pain.
The look of the skin can alter, too; skin color can fluctuate between blue, purple, red, and light, and it can also seem lean and shiny. Sweating routines in the area might be altered and hair and nail growth patterns can transform.
Alterations in the control of microcirculation are believed to cause the changes in skin color and irregular swelling.
Identifying features of CRPS
For example, if your patient's view of their limb is magnified, the pain and swelling intensify, and, conversely, if their view of the limb is minified, the pain and swelling subsides.
The condition is undoubtedly complicated and affects both central and peripheral nervous systems.
Even though it's more prevalent in girls, cRPS can occur in anyone at any age; the average age of onset is 40 and it rarely occurs in children under 10.
Some do not recover at all and the condition may be debilitating, although a lot of people will recover over time.
Although an injury precedes 90 percent of CRPS cases, it's not clear why certain people develop the situation.
CRPS and motor function
As well as the physical symptoms, CRPS often comes with abnormalities in perception and fundamental motor function; when someone moves pain is intensified. Curiously, the pain also worsens as they watch motor activities are carried out by others. In other words, the simple act of observing someone making a motion can increase their pain levels.
The investigators from Aalto University set out to learn more about the neurological signals that underpin this intriguing happening. Their results were released in Journal of Pain.
Brain scans from people with CRPS revealed abnormal patterns in some specific brain regions compared using the controls, as these actions were discovered.
Particularly, the subsequent brain regions responded significantly differently between the two groups:
Hand representation place in the sensorimotor cortex – the element of the mind that deals with motor and sensory information for that particular part of the body
Inferior frontal gyrus – when observing actions used
Secondary somatosensory cortex – usually activates in response to malady, light touch, visceral sensation, so when focusing on a specific tactile sensation
Inferior parietal lobule – involved in interpreting sensory information
Orbitofrontal cortex – believed to be engaged in sensory integration and pain modulation
Thalamus – procedures and relays information that is sensory as it enters the body.
The authors reason: "Our findings reveal that CRPS impairs action observation by changing brain regions linked to pain processing and motor control." More details of the topic can be found at pain forum