Burning Nights CRPS Support is a UK national charity dedicated to raising awareness of Complex Regional Pain Syndrome (CRPS)

CRPS Signs & Symptoms


CRPS has a number of signs and symptoms but not every sufferer will get the same signs and symptoms as someone else. In effect all CRPS sufferers are individuals where signs and symptoms are concerned even though the treatments available are the same.


You may hear some doctors refer to the Stages of CRPS which is covered later in this page, but many doctors now don’t lend much weight on the Stages as every sufferer is different in terms of when they have a particular symptom of CRPS. The time frames given for each of the stages are just approximates but not everyone will go through each of the CRPS stages in turn and some sufferers won’t through the stages at all. However we have included the CRPS stages on this page to give you an approximate time frame and show how the various symptoms change and amplify. (Hooshmand, H. & Phillips, E.M.)


On this page we will discuss the following:



  • The main sign of CRPS is PAIN that is not in proportion to the injury and has lasted for a longer period than it should have done.
  • Type of pain involved including aching, deep, burning or stabbing
  • Skin sensitivity – including extreme sensitivity to something that shouldn’t cause you pain such as cloth or water (ALLODYNIA)
  • Skin sensitivity – this is a heightened sensitivity that should cause pain (HYPERALGESIA)
  • Hair and nail changes
  • Joint swelling and stiffness
  • Abnormal skin colour changes
  • Tremors and muscles spasms
  • Abnormal skin temperature
  • Limited range of motion
  • Skin sweating
  • Difficulty moving your affected limb
  • Abnormal swelling


(See NHS Choices ‘Complex Regional Pain Syndrome’ and RSDSA website)





CRPS Symptoms | CRPS Signs | RSD Signs | RSD Symptoms

CRPS Symptoms | CRPS Signs | RSD Signs | RSD Symptoms
COPYRIGHT 2015-2016. All Rights Reserved. Burning Nights CRPS Support



The stages of CRPS don’t tend to be used by the medical community because they are not considered reliable and not used very much any more. This is because not every CRPS patient will go through the stages, not everyone will go through the stages in sequence, some Complex Regional Pain Syndrome patients will stay in one of the stages and some patients don’t go through the stages at all. However we have included on this page to give you an idea of how the symptoms can change with time.

There are considered to be three (3) main stages of Complex Regional Pain Syndrome, and signs and symptoms can vary depending on the individual. There has also been a fourth (4th) stage discussed between health professionals and researchers. Many people who are concerned with CRPS, including doctors, consultants and patients, won’t agree there is a Stage Four, and the majority of patients diagnosed with CRPS will never reach the so-called Stage Four. However the fourth stage has been added as a matter of completeness.


STAGE ONE – DYSFUNCTION STAGE (0 – 3 months approx)) 

This usually lasts between 0 – 3 months. The professionals consider this phase to be ACUTE. The symptoms include extreme burning pain which lasts longer than would be considered normal from the injury, swelling of the limb or extremity, increased sensitivity when the limb / extremity is touched, redness, warmth, sometimes there is faster hair growth, faster nail growth and excessive sweating. There may also be some joint stiffness. The pain can be described as sharp stabbing or even extreme pins and needles.

There may be changes in circulation of the affected limb/s, mainly concerning the blood vessels in that they may be constricted or even obstructed. This is when it may cause skin changes. Patients often say they have colour changes going from red to blue or black, purple or white. The skin may look blotchy or spotty when the colour changes occur. The limb or extremity may have temperature changes either warmer or cooler than other limbs or extremities. This will continue to vary. In this stage sufferers may hear the term ‘Warm/Hot CRPS,’ the reason for this is that in this acute phase your CRPS affected limb will tend to feel warm or hot compared to your other non-affected limb. As the CRPS progresses this ‘Hot/Warm’ phase will give way to the chronic phase and your CRPS affected limb will become ‘Cold CRPS.’

Please visit our page TYPES of CRPS to learn more about Warm/Hot and Cold CRPS.


STAGE TWO – DYSTROPHY (3 – 6 months approx)

This stage may last between 3 – 6 months. It is known as the DYSTROPHIC stage because of the muscle weakness due to the lack of use of the limb / extremity. The burning pain becomes much worse and usually has spread from the initial area, the hypersensitivity will become even more sensitive to any form of touch, the muscles and / or limb will become stiffer, there is persistent swelling or Oedema. Unfortunately there comes the ‘Catch-22’, in that you will avoid moving the limb / extremity to get away from the pain but then by not moving you will be prone to stiff muscles and joints and also the limb will be so swollen that you won’t be able to move it.

There may be thinning, wrinkling or wasting of the skin, the skin may also become dry or withered, the skin may become blue-ish in colour because of the lack of circulation or poor oxygen in the blood (doctors call this CYANOSIS.) The speed of nail and hair growth will slow down. You may also see that your nails near the concerned limb or extremity tend to be brittle so they will break or crack a lot more easily. Excessive sweating may also increase during this stage. Skin texture may also change and the temperature will carry on going between hot and cold, however it will tend to become cooler. If your doctor or specialist sends you for radiographs or x-rays it may show there is bone mass reduction (Osteopenia.)



STAGE THREE – ATROPHY (after 6 months or after 1 year)

Usually this occurs after 6 months but you are more likely to be in this stage after 1 year. This is the ATROPHIC stage. Skin around the affected area tends to be paler, stretched, shiny, cool to the touch and dry. Due to the skin becoming stretched through the swelling ulcers and cracks in the skin may become apparent and may become infected. Nails will become rigid. Hair becomes brittle. There may be spreading of the condition to other parts of the body. Limbs / extremities or muscles will have become even stiffer due to the swelling and lack of use.

Severe bone mass reduction will usually be seen and if the CRPS is in the hands or arms the fingers will become thin and long. Osteoporosis can sometimes be seen on x-rays and radiographs and loss of minerals in the bone. Some people with CRPS may say that their affected tendons and muscles have become permanently shortened (also known as contracture.) The temperature of the affected area will now tend to be cooler than when it was in the earlier stages. By this stage there may be other muscular problems which can include tremors, spasms, severe jerking and possibly Dystonia, which is a muscle spasm that will last which causes distorted positions of the body or twisting movements.

Complex Regional Pain Syndrome symptoms for STAGE FOUR 

The Final Stage – STAGE FOUR – is that stage that some professionals don’t believe it exists and therefore it is not mentioned on most websites concerning CRPS. However is mentioned here, as we believe everyone needs to be informed of as much information as practicably possible. This is the stage that the Founder of Burning Nights reached for her right leg during her journey of CRPS. The symptoms for her left leg went through the stages faster than her other leg did which resulted in a 2nd above knee amputation. She is certainly not the only example of amputation and many more CRPS sufferers reach the Stage 4 of CRPS and need amputation of their limbs. However it must be pointed out that not everyone will reach the amputation point.



This is seen by health professionals who acknowledge this stage, as the most advanced of CRPS. Most treatments for the condition will not make any difference. Damage to the affected limb may become irreparable due to ulcers, skin splitting or cracking, infections, onset of cellulitis or even gangrene. The severe constant burning pain is still ever present. Other symptoms present in the other 3 stages are present within this stage. Osteoporosis may also be more noticeable within this stage.

If gangrene sets in or the person gets septicaemia then doctors and specialist may require the limb to be amputated so that any infection like gangrene will stop spreading. THERE ARE NOT MANY AMPUTATIONS CAUSED BY CRPS. However they do happen, the Burning Nights founder is just 1 person who can confirm that she was one of those statistics. She had such severe ulcers from her knee to her toes (as seen Our Founder) that it was suggested she have her leg above the knee amputated. There are no studies showing that amputation is a cure and sometimes it can increase the rate of CRPS spreading. There may also be some internal organs that may be affected by the CRPS, which has been covered below.Why not check out our amputation for CRPS blog – ‘Is Amputation Really A Cure For CRPS?’


Visit the article by Hooshmand, H. & Phillips, E.‘ Spread of Complex Regional Pain Syndrome (CRPS),’ where they goes through each of the 4 stages of CRPS.





Unlike cancer and other well-known conditions, there is still NO permanent research facility in the UK for Complex Regional Pain Syndrome; neither are there any specific Government funds for any research. We need to have Doctors, Researchers and Scientists, to find medication specifically aimed at the condition rather than medicines taken from different areas e.g. Gabapentin is usually used for Epileptics. At the very least they need to devise a test to determine if someone has Complex Regional Pain Syndrome symptoms or not. We are trying to become a registered UK charity for CRPS so please visit our DONATIONS page to see how you can help us become a charity.



Below is an image showing the different symptoms that can affect CRPS/RSD Sufferers:


Burning Nights CRPS/RSD Symptoms

Burning Nights CRPS/RSD Symptoms (Copyright 2014-2016. All Rights Reserved. Burning Nights CRPS Support)




  • Intense burning, throbbing, gnawing or aggravating pain
  • Increased sensitivity / Hypersensitivity
  • Pain out of proportion to the original injury


  • Hair growth
  • Hair loss
  • Brittle hair


  • Nail growth
  • Nail loss
  • Rigid nails
  • Brittle nails




  • Excessive sweating
  • Hypersensitivity / increased sensitivity to touch
  • Swelling
  • Thinning of the skin
  • Wrinkling of the skin
  • Wasting of the skin
  • Dry or withered skin / Skin texture changes
  • Skin changes
  • Colour changes to the skin
  • Blotchy or spotty skin
  • Temperature changes – both hot and cool
  • Stretched, shiny skin
  • Ulcers
  • Cracks in the skin
  • Cellulitis
  • Other skin infections e.g. Pseudomonas



  • Muscle weakness
  • Joint stiffness
  • Muscle stiffness
  • Contracture – permanent shortening of tendons and muscles
  • Loss of movement
  • Dystonia
  • Tremors
  • Spasms
  • Severe jerking




  • Lack of circulation / poor circulation
  • Infections
  • Septicaemia
  • Gangrene



  • Bone mass reduction
  • After some time – Severe bone mass reduction
  • Osteoporosis



  • Dental problems including gum issues, brittle/crumbly teeth
  • Eye problems
  • Migraines or headaches
  • Nose bleeds – Especially females, aged 20-29 & take Lyrica/Pregablin (eHealthMe study 16 January 2016)

See Thapa, D. & Ahuja, V. (2012) regarding CRPS in the eyes



  • Internal organ spreading – See Hooshmand & Phillips article below
  • Cardiac
  • Respiratory
  • Cognitive
  • Urological problems – See Schwartzman, R. (2012)
  • Gastrointestinal



  • Depression
  • Anxiety & stress
  • Sleeping problems / Insomnia



  • Irreparable damage to the limb
  • Amputation
  • Fatigue





From various research studies undertaken around the world, researchers such as Forss, N. et al (2005) say that:


“The spread of chronic pain from its initial site of presentation is common…” 


According to van Rijn, M.A. et al (2011):

“One hundred and eighty-five CRPS patients were retrospectively evaluated. Cox’s proportional hazards model was used to evaluate factors that influenced spread of CRPS symptoms. Eighty-nine patients exhibited CRPS in multiple limbs. In 72 patients spread from a first to a second limb occurred showing a contralateral pattern in 49%, ipsilateral pattern in 30% and diagonal pattern in 14%.” 



Therefore the results on the same research study from van Rijn, M.A. et al  (2011) show that:

“….CRPS usually affects one limb but in some cases it spreads to another limb, most often in a contralateral (53%) or ipsilateral (32%) pattern and usually without secondary trauma. A diagonal pattern of spread was nearly always triggered by a new trauma. Spontaneous spread and spread after a separate trauma followed different patterns.” 




According to Hooshmand, H. and Phillips, E. they say that:


“CRPS invariably involves the internal organs. Usually the skin surface is cold at the expense of increased circulation to the internal organs. This increased circulation can cause osteoporosis, fractures of bone, abdominal cramps and diarrhea, disturbance of absorption of foods with resultant weight loss, water retention with aggravation of premenstrual headaches and depression, persistent nausea and vomiting, as well as severe vascular headaches mistaken for “cluster headache”. 


Hooshmand, H. and Phillips, E. also state that there are other complications involving the internal organs include:


Congestion and inflammation of the ovaries, uterus or small bowel

Attacks of fluctuating blood pressure

Constriction of the blood vessels to the kidney resulting in periodic bleeding in the urine

Attacks of swelling of the internal organs

Chest pain

Attacks of sharp central pain (stabbing severe pain in the chest or abdomen)

Changes in voice (suddenly developing a temporary “chipmunk” type of voice change)





Hooshmand & Phillips also say that Sympathetic Nerve Blocks can also cause complications for internal organs including:

accidental trauma to the kidney with resultant hematuria (blood in urine) and aggravation of hypertension


In another research article Schwartzman, R.J. (2012) he suggests that various internal organs can be affected by Complex Regional Pain Syndrome including the lungs. Out of a study of 270 CRPS sufferers, 15.5% complained of shortness of breath and that they could not take a deep breath, Schwartzmann, R.J. states that:


“Dystonia of the chest wall muscles is common in severe long-standing patients…..Dystonia is a major component of the movement disorder of CRPS.”



In a research study Irwin & Schwartzman ( 2011) they found that a CRPS sufferer had:


“…developed painful dystonia of chest wall musculature.” 



In response to their finding, this patient was given intrathecal baclofen as a treatment for the dystonia in the chest wall and found that from this treatment:


“…the patient had symptomatic relief and improvement of dystonia” 




  • eHealthMe (2016) ‘Nosebleeds in CRPS,’ eHealthMe website. 16 January 2016. Available from: <http://www.ehealthme.com/print/cs9085121>
  • Forss, N. et al. (2005) ‘Mirror like Spread of Chronic Pain,’ NCBI NIH & Neurology. 1 September 2005. Vol 65 (5). pp 748-750. Available from: <http://www.ncbi.nlm.nih.gov/pubmed/15872154>  Epub 2005 May 4.
  • Sebastin, S.J. (2011) ‘Complex Regional Pain Syndrome,’ Indian J Plast Surg. 2011, May-August. Vol 44(2). pp 298-307. Available from: <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3193642/> doi: 10.4103/0970-0358.85351





*The descriptions, facts and figures given on this website are not meant to be used in any legal matters; instead it is for information purposes only.

*Images are copyright*


Whether you look at the stages of CRPS or the symptoms of CRPS you are able to see the effects on a CRPS sufferer. Every person suffering from CRPS/RSD won’t have the same symptoms as everyone else. Even though CRPS/RSD can affect anyone, each sufferer is an individual where the symptoms, signs and stages are concerned.


Last Updated: 12/10/2017

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