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Facial grimace pain scale

The Feline Grimace Scale is a valid, fast, reliable and easy-to-use tool that can help with pain assessment. Based on the scores of the Feline Grimace Scale, it is possible to know if the administration of analgesics (i.e. pain killers) is required helping veterinarians with clinical decisions in pain management. Learn more about the FG Grimace scales were developed based on pain scales measuring facial expression in human neonates Grimace scales We all use facial movement to express pain and suffering and to recognise it in other humans. Scientific measurement of facial expression is in fact widely used to measure pain in infants which cannot express their feelings verbally (Schiavenato, 2008)

Because there's a new pain scale in town: the Feline Grimace Scale (FGS), which interprets changes in facial expression, and could help provide practitioners—and possibly pet owners—with additional clues Facial Grimace Score: The facial grimace scale scores the level of pain (from 0-10 on the left) as assessed by thecaregiver observing the facial expressions of the resident. Assessment is done once daily or more (14 days areindicated above). This assessment of the degree of discomfort should be done at the same time every day andduring the same level of activity. Note if rescue/PRN medication is given; yes (y), no (n) or dose

Action units relating to pain have been identified in rodents and rabbits and incorporated into species-specific grimace scales -. These grimace scales are considered to give a number of advantages over other routinely used methods of assessing pain in animals Grimace scales are tools used to evaluate pain in animals based on changes in facial expressions and they have been developed in different species. Our laboratory has developed and validated the Feline Grimace Scale, in collaboration with other researchers at the Université de Montréal, to improve feline pain management Facial Grimace Score: The facial grimace scale scores the level of pain (from 0-10 on the left) as assessed by the caregiver observing the facial expressions of the resident. Assessment is done once daily or more (14 days are indicated above) The FACES Scale is widely used with people ages three and older, not limited to children. This self-assessment tool must be understood by the patient, so they are able to choose the face that best illustrates the physical pain they are experiencing

Why the long face: just how risky is horse riding?The Horse Grimace Scale Helps Recognise Pain | Horses and

Facial Expression (Grimace) Scales for Pain Assessment of Laboratory Species (Webinar Recording) WEB-066: This webinar will examine facial expression scales and their use in several laboratory animal species. The psychometric principles underlying scale validation will be reviewed, in order to understand the strengths and weaknesses of. Mouse Grimace Scale (MGS) In 2010, Jeffrey Mogil and his group at McGill University, developed the mouse grimace scale (MGS) (2) where pain in mice is quantified according to objective and blinded scoring of facial expressions based on the Facial Action Coding System (FACS), as is done routinely for the measurement of pain in nonverbal humans

Pain assessment in cats Feline Grimace Scal

The Mouse Grimace Scale (MGS) [ 16] is the sum of five facial features (FAUs): orbital tightening, nose bulge, cheek bulge, ear position, and whisker change. Both HGS and MGS have been partially validated for pain assessment under different conditions [ 15 - 19, 21, 22 ] Grimace Scales are simplified methods of assessing the facial expressions specifically related to pain. They were developed for mice 15, rats 16, rabbits 17, horses 18, sheep 19, 20, lambs 21,.. Fentanyl reversed the changes in rat grimace scale scores, suggesting that these scores reflect pain perception. These findings validate the grimace scale as a reliable and sensitive metric for the assessment of ongoing pain in a rodent model of chronic, trigeminal neuropathic pain

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Grimace Scales - Norecop

Hence, a Sheep Grimace Scale (SGS) was herein established by observing and interpreting sheep facial expressions as a consequence of pain and distress following unilateral tibia osteotomy. The animals were clinically investigated and scored five days before surgery and at 1, 3, 7, 10, 14 and 17 days afterwards Keating et al. described facial expression responses to pain in rabbits, namely ear, eye, whisker, cheek and nose positions, and categorized them into a rabbit facial grimace scale (FGS) 12 based..

Rat grimace scale Read the original paper Sotocinal SG, Sorge RE, Zaloum A et al. (2011). The Rat Grimace Scale: a partially automated method for quantifying pain in the laboratory rat via facial expressions The grimace scale (GS), sometimes called the grimace score, is a method of assessing the occurrence or severity of pain experienced by non-human animals according to objective and blinded scoring of facial expressions, as is done routinely for the measurement of pain in non-verbal humans Pain Behavior Assessment Tool (PBAT): Evaluates for grimace, frown, wince, eyes closed, eyes wide open with eyebrows raised, looking away in opposite direction of pain, grin, smile, mouth wide open to expose teeth and tongue, clenched teeth. Behavioral Pain Scale (BPS): Assesses facial behavior and assigns a numerical value: Relaxed, partially. Facial expressions are increasingly being used to assess pain in non-human species, including rodents, horses, and lambs. The development of these species-specific grimace scales has allowed for more rapid pain detection, which can lead to better animal welfare if intervention promptly occurs. For grimace scales to ever be used as a stand-alone measure of pain, it is important they correlate. The Feline Grimace Scale A new scoring system that interprets changes in facial expression could help provide guidance to veterinarians and eventually cat parents

Grimace scales are simplified methods for evaluating facial expressions specifically related to pain based on the assessment of action units focusing on the eyes, ears, and cheeks. The utility of the scales was well-established across a range of laboratory animal species and animal model types The Horse Grimace Scale HGS (App), was developed by AWIN WP4 to teach users to recognize, assess and manage painful conditions in horses using facial expressions The Horse Grimace Scale HGS (App), was developed by AWIN WP4 to teach users to recognize, assess and manage painful conditions in horses using facial expressions. Surgical and other pain are quite commonly experienced by horses but, for appropriate pain relief it is crucial that veterinarians, farmers, horse owners, and riders are able to.

The Horse Grimace Scale (HGS) is a facial-expression-based pain coding system and may potentially overcome the difficulties described with the Obel assessment . Changes in the HGS have been shown to be detectable, without the need of approaching or moving the subject, by observers with only the HGS manual for guidance Grimace scale diagram University of Calgary, adapted from Evangelista et al. 2019 Scientific Reports 9, 19128. The research, however painstaking, resulted in a clear cut illustrated scale by which to assess the facial expression of cats (via eye, whisker, and ear position) and assign a corresponding level of pain The Rat Grimace Scale (RGS), a facial expression scale, quantifies the affective component of pain in rats. The RGS was developed to identify acute and inflammatory pain, and applicability in acute and chronic visceral pain is unknown. The dextran sulfate sodium (DSS) colitis model is commonly used in rats, but pain is rarely assessed, instead.

New feline pain scale interprets pain from cats' facial

  1. We report here the development of the Rat Grimace Scale (RGS), its ability to quantify pain in three common algesiometric assays (intraplantar complete Freund's adjuvant, intraarticular kaolin/carrageenan, and laparotomy), and the development of Rodent Face Finder® software for automated generation of scoring-ready still photographs of both.
  2. Grimace scales are one such response derived from human facial codification scales [32,33]. The Facial Action Coding System (FACS) systematically catalogs all possible movements of the facial muscles, or combinations of them, such as lowering the eyebrows, tightening and closing the eyelids, wrinkling the nose, and raising the upper lip
  3. Pain scales used for assessment of acute pain in cats. Feline Grimace Scale (FGS) The FGS is an easy, quickand simple tool for use in cats with any type of acute pain based on changes in facial expression. The FGS was also shown to be reliable in cats undergoing denta
  4. The Facial Grimace Scale scores the level of pain (from 0 to 10 on the left) as assessed by the caregiver observing the facial expressions of the resident. Assessment is done once daily or more (14 days are indicated above). This assessment of the degree of disco mfort should be done at the same time every day, and during the same level of.

Wong-Baker FACES Pain Rating Scale No Hurt Hurts Little Bit Hurts Little More Hurts Even More Hurts Whole Lot Hurts Worst Explain to the person that each face is for a person who feels happy because he has no pain (hurt) or sad because he has some or a lot of pain. Face 0 is very happy because he doesn't hurt at all. Face 1 hurts just a. Mice in pain have facial expressions that are very similar to human facial expressions, according to scientists who have developed the mouse grimace scale. The pain expressions of mice could. of ethograms, facial grimace scoring, burrowing, and nest-building, focus on evaluating changes in spontaneous behaviors giving an analgesic will reduce the pain scale score or that pain scale scores will increase immediately after surgery and return to baseline as inflammation subsides.90 Because construct validit

Tools that measure pupil response and facial movements (such as looking at people's grimaces and winces) are also currently being studied. How to Talk About Your Pain. Even if your doctor uses a 0-10 pain scale, consider these additional ways to discuss your pain to be more precise. Compare your pain with the worst pain you've ever experienced We investigated the relation between grimace for painful stimulation and best motor response (M) in Glasgow Coma Scale (GCS) in patients with comatose state. We recorded 51 total GCS scores from 43 patients with comatose state from patients transported to the emergency room or admitted to the emergency ward of Shizuoka Red Cross Hospital The Mouse and Rat Grimace Scales (MGS and RGS) measure characteristic changes in facial expressions that associate with pain in rodents. 5,6 To make use of these scales, close-up video is obtained from rodents, individual images containing the face are manually extracted, and the images are scored for the presence or absence of grimacing, as. The Rabbit Grimace Scale Research has demonstrated that changes in facial expression provide a means of assessing pain in rabbits. The specifi c facial action units shown below comprise the Rabbit Grimace Scale. These action units increase in intensity in response to post-procedural pain and ca

The researchers identified subtle changes in facial expressions that indicate pain to develop the horse grimace scale. It comprises six facial action units (see image below), including stiffly backwards ears, orbital tightening, tension above the eye area, prominent strained chewing muscles, mouth strained and pronounced chin, strained nostrils. The Feline Grimace Scale measures the absence or presence of signs of pain including ears flattened and rotated outward, squinted eyes, whiskers that are bunched together, and if the cat's muzzle is tense and their head is lowered. Each of the five facial indicators is given a score of zero (sign absent), one (moderate sign) or two (obvious. Pictorial Pain Scales. The FPS and the Wong-Baker Faces Pain Scale consist of a series of progressively distressed facial expressions which were developed for use with children. The patient chooses the face that represents the severity or intensity of their current pain Those so-called 'pain faces' are used in human medicine to detect, as well as assess, pain in non-verbal humans (i.e., infants) [7,25,26]. These pain faces can be used to develop grimace scales and capitalise on the human propensity to focus on the facial area [27,28]. The conservation of these pain faces is als The Feline Grimace Scale, a new tool that uses changes in facial expressions to assess pain, has been published in the open-access journal Scientific Reports by Nature Publishing. The tool was developed and validated at the laboratory of Dr Paulo Steagall, in collaboration with researchers at the Université de Montréal

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Development of the Horse Grimace Scale (HGS) as a Pain

We recently demonstrated the utility of quantifying spontaneous pain in mice via the blinded coding of facial expressions. As the majority of preclinical pain research is in fact performed in the laboratory rat, we attempted to modify the scale for use in this species. We present herein the Rat Grimace Scale, and show its reliability, accuracy, and ability to quantify the time course of. Additional Acute Pain Scale: Feline Grimace Scale (FGS) This is a scale that was invented to help veterinary professionals develop a better understanding of how to access what type of pain the cat is experiencing. The scale along with observation as well as interaction with the cat can help the veterinarian determine how much pain the cat is in Facial expressions are often used as an indicator of pain level in animals [2], [15]. The Sheep Pain Facial Expression Scale (SPFES) [1] has recently been introduced. It is a standardised measure to assess pain level based on facial expressions of sheep, and has been shown to recognise pain in sheep faces with high accuracy. However, training o

Feline Grimace Scale tells you more effectively if a cat

About Feline Grimace Scal

  1. utes to look for changes in the facial markers. The Feline Grimace Scale is a fast and accurate tool that uses data to help the veterinary team drive decisions for better pain management in cats
  2. Texto Contexto Enferm. 2006;15(n.esp):88-96.. For such, scales were developed to allow NB measurement and identification of pain as the fifth vital sign. Among different pain scales, most widely studied are Neonatal Facial Activity Coding Scale (NFCS), Pain Evaluation Scale (NIPS) and Premature Infant Pain Profile (PIPP)77 Guinsburg R
  3. For animals, including horses, grimace scales have been developed to standardize the evaluation of facial expressions during pain assessment. These scales require fewer inputs than the FACS-based systems and focus on certain described movements and appearance of ears, eye, side of the chin, nostrils and muzzle/nose/snout
  4. Pain is written on a cat's face, U of C researchers find. Dr. Daniel Pang, co-author of the Cat Grimace Scale study, assesses Barney at a lab in University of Calgary Faculty of Veterinary.
  5. 1. The Rat Grimace Scale images and accompanying descriptions are borrowed verbatim from: Sotocinal SG, Sorge RE, Zaloum A, et al. 2011. The Rat Grimace Scale: A Partially automated method for quantifying pain in the laboratory rat via facial expressions. Molecular Pain 7: 55. the baseline position, and tend to 2
  6. Neonatal Infant Pain Scale Pain assessment Example Score Facial Expression Restful face, neutral expression Tight facial muscles: furrowed brows, chin, and jaw (neg. facial expression: nose, mouth, brow) 0 (relaxed muscle) 1 ( (grimace) Cry Quiet, not crying Mild moaning, intermittent Loud scream: rising, shrill, continuous (baby intubated.
  7. Background The Feline Grimace Scale (FGS) is a facial expression-based scoring system for acute pain assessment in cats with reported validity using image assessment. The aims of this study were to investigate the clinical applicability of the FGS in real-time when compared with image assessment, and to evaluate the influence of sedation and surgery on FGS scores in cats

Grimace scales have been used for pain assessment in different species. This study aimed to develop and validate the Feline Grimace Scale (FGS) to detect naturally-occurring acute pain. Thirty-five client-owned and twenty control cats were video-recorded undisturbed in their cages in a prospective, case-control study. Painful cats received analgesic treatment and videos were repeated one hour. Grimace Scales/Pain Faces are specific to painful behaviors and detecting certain expressions that any mammal can develop when in a pain states (acute, chronic or neuropathic). Since the coding is based on individual muscle movements and not on the perception of a composed facial expression, it avoids any emotional context biases Facial expression is widely used as a measure of pain in infants; whether nonhuman animals display such pain expressions has never been systematically assessed. We developed the mouse grimace scale (MGS), a standardized behavioral coding system with high accuracy and reliability; assays involving noxious stimuli of moderate duration are. Facial expression has been used to assess pain levels in various animal species, including humans. In horses, this has lead to the development of the Equine Pain Face, also called the Horse Grimace Scale. A study by Dalla Costa et al. 2014, tested the Horse Grimace Scale on horses undergoing routine castration Sow grimace scale, with descriptions for each of the five facial action units (FAUs) employed: Tension above eyes, Snout angle, Neck tension, Temporal tension and ear position, and Cheek tension. FAUs are scored based on a three-grade scale: (score 0 = painless; score 1 = moderate pain and score 2 = severe pain)

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(PDF) Facial expressions of pain in cats: development of

Rodents in pain generally have decreased activity, but increased activity may also be seen. Other abnormal behaviors include back-arching, belly-pressing, twitching, and staggering. Changes in facial expression. Utilizing a grimace scale may be beneficial in identifying pain. Decreased body temperatur A grimace, a sour face, or a pained look is likely to follow, maybe even a Is This The Year the Packers Special Teams Improve? The app was launched after the developers at AltaML discovered the Feline Grimace Scale (FGS), a scientifically-validated tool for assessing acute pain in cats based on changes in facial and his face contorted. The face grimace scale, originally developed to assess pain in nonspeaking humans, was recently validated for pain assessment in several laboratory animals, including rats. The RGS rates pain from 0 (no pain) to 2 (severe pain) based on changes in 4 facial expression categories: Orbital tightening. Cheek/nose flattening

Facial Expression (Grimace) Scales for Pain Assessment

  1. An equine pain face comprising 'low' and/or 'asymmetrical' ears, an angled appearance of the eyes, a withdrawn and/or tense stare, mediolaterally dilated nostrils and tension of the lips, chin and certain facial muscles can be recognized in horses during induced acute pain. suggesting that the Horse Grimace Scale describes a.
  2. e whether an expression-based pain-coding system, dubbed the horse grimace scale or HGS, could be used instead of making painful horses walk and move
  3. Animal Scientists have finally developed a Facial Grimace Scale to tell how much pain a horse is in. They have kept the scale simple and since it relates only to the head it is easy to use. Stiffly backward ears Orbital (eye) tightening all around Tension above the eye area Strained chewing muscles Facial Muscle
  4. In rats, two behavioural pain scales, the Rat Grimace Scale (RGS, a facial expression scale) and a composite behaviour score (CBS, a behavioural ethogram reliant on postural changes), are both promising pain assessment methods. Both scales have been used to assess pain in a laparotomy model, however, they have never been compared directly and.
  5. Assessing facial expressions to detect pain may improve animal welfare. New research has led to a practical pain assessment tool for cats. The so-called grimace scale uses facial features combined.
  6. The facial sedation scale, called FaceSed, is based on the Horse Grimace Scale, which uses equine facial expressions to assesses pain. They adapted three of the facial measures used in the.
  7. ence of facial action units (FAU), e.g. Orbital Tightening, Nose.

Understanding the Grimace Scale as a Pain Assessment for

  1. To describe the development of a facial expression tool differentiating pain-free cats from those in acute pain. METHODS. Observers shown facial images from painful and pain-free cats were asked to identify if they were in pain or not. From facial images, anatomical landmarks were identified and distances between these were mapped
  2. Descriptor Scale Wong-Baker Facial Grimace Scale Activity Tolerance Scale Spanish UNIVERSAL PAIN ASSESSMENT TOOL This tool is intended to help assess pain. Use the faces or behavioral observations to interpret expressed pain intensity Please circle your pain level Por favor circule su nivel de dolo
  3. Facial Grimace Score: The facial grimace scale scores the level of pain (from 0-10 on the left) as assessed by the caregiver observing the facial expressions of the resident. Assessment is done once daily or more (14 days are indicated above). This assessment of the degree of discomfort should be done at the same time every day an
  4. responses, have been developed. One example is the Mouse Grimace Scale (MGS), which uses mouse facial grimace features as a measurement of supraspinal and emotional aspects of pain (Langford et al., 2010). The advantage of the MGS is that it does not rely on a withdrawal from a stimulus. Therefore, the results may be more reliable about the pain
  5. Individualized Pain Scale Example (based on observable behavior) Name: _____ Scale SYMPTOMS TO DETERMINE SCALE NUMBER 0 Awake -Smiles, no head severe facial grimace, shoulders may leave surface of mattress when forcefully turning head side to side, and may put hand to mouth but no biting. Unable to sleep - Does not calm
Rabbit grimace scale | NC3RsHorse Grimace Scale | Hands Healing Horses

Can grimace scales estimate the pain status in horses and

pain associated with laminitis in horses at rest. Recently, facial expressions have been investigated for pain assessment in several non-human mammal species, including horses [8-12]. The Horse Grimace Scale (HGS) is a facial-expression-based pain coding system and may potentially overcome the difficulties described with the Obel assessment. Pain Assessment Tools Pain Scale (NIPS) (Recommended for children less than I year old) - A score greater than 3 Indicates pain Facial Expression 0 — Relaxed muscles I — Grimace Cry O -No I — Wumper 2 — Vigorous Cly Breathing Patterns 0 — Relaxed I — Change m Breathin

Facial Expression Normal Short grimace <50% of time Long grimace >50% of time Tools for Assessing Pediatric Pain in the Prehospital Setting Summary •Types of Pain Scales: -Self-report *Patients able to understand instructions and point or verbalize -Observational/Beha vioral *Young or cognitively impaired patient Rabbit Grimace Scale (RbtGS) Score Sheet Developed by Dr Matt Leach and the Pain and Animal Welfare (PAWS) group at Newcastle University. Instructions The Rabbit Grimace Scale describes five action units that should be scored. These action units have been shown to increase in intensity in response to post-procedural pain (Keating et al. 2012. a Grimace Scale for Pigs.15 The Piglet Grimace Scale requires considerable further development as a potential tool to detect post-procedural pain in neonatal pigs.16 Full characterization of the Piglet Grimace Scale would give the opportunity to implement it as a cost-effective tool for the on-farm assessment of painful and or distressin It is based on elements of the Horse Grimace Scale. Sedation and tranquilisation procedures in standing horses are alternatives to general anaesthesia to reduce the high anaesthesia-related. The possibility to assess pain through changes of facial expression has also been studied in animals, and pain scales developed which include the 'Mouse Grimace Scale' (Langford et al., 2010), the 'Rat Grimace Scale' (Sotocinal et al., 2011) and the 'Rabbit Grimace Scale' (Keating et al., 2012)

In the study, Facial expressions of pain in cats: the development and validation of a Feline Grimace Scale, the researchers observed and assessed a total of 70 cats over a nine-month period. The cats selected for assessment all varied in age, breed, and gender. Twenty of the cats were healthy while another 50 cats were those admitted to. Are Both Sensory and the Affective Dimensions of Pain Encoded in the Face? PAIN. 153, 350-358. Leach, Klaus, Miller, di Perrotolo, Sotocinal, Flecknell (2012). The Assessment of Post-Vasectomy Pain in Mice Using Behaviour and the Mouse Grimace Scale. PLoSone. 7(4); e35656. Lizarrage and Chamber (2012) Use of Analgesic Drugs for Pain Management.

Facial expressions of pain in cats: the development and

Although there are other pain scales used, these are the only two that have been validated until now. The Feline Grimace Scale was developed by the Montreal team of Dr. Paulo Steagall (associate professor of veterinary anesthesia and analgesia) and Dr. Marina Evangelista (a doctoral student). The scale scores from 0-2 on five different facial. 63 Rabbit Grimace Scale (RbtGS)13, which uses changes in facial expression to quantify pain. Grimace 64 scales have been developed and validated in several species, such as Horse14, Sheep15, Ferrets16 and 65 laboratory small rodents17,18. 66 The Rabbit Grimace Scale is based on five facial action units (FAU). Even though its use is faste

The grimace scale reliably assesses chronic pain in a

The group also looked at facial grimace in response to the various paw stimuli using the mouse grimace scale. Heavy pinprick stimulation consistently elicited greater facial grimace scores, including orbital tightening, compared to the cotton swab. Narrowing down to pain-like behavior Texto Contexto Enferm. 2006;15(n.esp):88-96.. For such, scales were developed to allow NB measurement and identification of pain as the fifth vital sign. Among different pain scales, most widely studied are Neonatal Facial Activity Coding Scale (NFCS), Pain Evaluation Scale (NIPS) and Premature Infant Pain Profile (PIPP)77 Guinsburg R

The Sheep Grimace Scale as an indicator of post-operative

The Horse Grimace Pain Scale with images and explanations for each of the 6 facial action units (FAUs). Each FAU is scored according to whether it is not present (score of 0), moderately present (score of 1) and obliviously present (score of 2). Dalla Costa E, Minero M, Lebelt D, Stucke D, Canali E, et al. (2014) Development of the Horse. Facial expressions of pain in cats: the development and validation of a Feline Grimace Scale. Cats express pain with subtle changes on their faces. The good news is that we can all learn this language with a simple tool delivered by a research group lead by Dr. Paulo Steagall from the Veterinary Faculty, Université de Montréal I say it is objective because you are seeing it and giving it the name facial mask of pain. Subjective is what the subject (patient) tells you. Examples of subjective pain references are the character of pain (burning, stabbing) the pain rating (when you ask what the pain is on a scale of 1-10). 0 Likes. I RN A. Oct 27, 2006. The Horse Grimace Scale (HGS) evaluates six criteria dealing with the expressive features of a horse's face such as the ears, eyes, nostrils and mouth to develop a total pain score. The promise of this test lies in its ease of use, low cost of training and materials, and most importantly the high reliability within and between observers The app was launched after the developers at AltaML discovered the Feline Grimace Scale (FGS), a scientifically-validated tool for assessing acute pain in cats based on changes in facial.

Overview: The CHEOPS (Children's Hospital of Eastern Ontario Pain Scale) is a behavioral scale for evaluating postoperative pain in young children. It can be used to monitor the facial smiling 0 composed 1 grimace 2 child verbal positive 0 none 1 complaints other than pain 1 pain complaints 2 both pain and non-pain complaints Grimace Scales Grimace scales have been developed for a number of species, including humans, rodents, horses, rabbits, and cats.12 These scales use interpretation of facial expressions to determine pain severity. These scales have not been widely adopted in clinical practice. Client Assessments Client-based pain assessment is anothe This paper reviews current facial expression pain scales (Grimace Scales), discussing the general conceptual and methodological issues faced when assessing pain, and highlighting the advantages of using facial expression scales over other pain assessment methods. We provide guidance on how facial expression scales should be developed so as to. Pain assessment in cats The Glasgow feline composite measure pain scale (CMPS-Feline) is a more recent development in the management of feline acute pain and utilises both scoring of six descriptive categories as well as assessment of facial geometry. The pain score is the sum of each of these seven categories and the maximum score is 20 Chronic Pain Assessment Scales: Stanford Pain Scale. The Stanford Pain Scale is a more thorough version of the Numerical Rating Scale. Like the Numerical Rating Scale, the Stanford Pain Scale ranges from 0 to 10. However, the ratings are also categorized by color and descriptions. The descriptions are very detailed Physical signs of pain, such as facial grimace, tachycardia, tachypnea, or restless-ness, can be helpful, although they have poor Wong-Baker FACES Pain Rating Scale. (C) Visual analog scale. (D