Subjective pain scale and how to determine the objective pain level.

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Physical pain is an alert mechanism of the body designed to protect us from deterioration.

Subjective pain scale and how to determine the objective pain level. image 1

The pain scale is a subjective measure of pain affected by the intensity of the pain, the duration, and the location. Pain endurance does vary from person to person, but pain intensification has more objective metrics.


If you look for definitions for physical pain, you will find that they are not uniform.

Links: | What is inflammation? (Inflammation vs. Infection) | Pain (Wikipedia) | 

Physical pain - My suggested definition. (Without using synonyms for pain) 

"Pain is a short or continuous alarm sensation caused by temporary or permanent cell damage (above a certain threshold) in tissue with sensory nerves (nociceptors)." Pain is a part of the self-defense mechanism. 


How does your brain respond to pain? - Karen D. Davis.

Three factors determine the objective severity of pain.

The pain scale is a subjective measure in which the person is asked about the pain level. The objective measurement of pain tries to quantify the pain objectively. Primarily to assess the level of pain of injuries & chronic patients are witnessing. To this day, to the best of my knowledge, there is no objective measure of pain. The subjective perception of pests has a relatively high variance.

  1. The Density of the sensory nerves (nociceptors) differs in different body areas. The head area, palms, hands, genitals, and nipples are rich in sensory nerves, which tend to hurt more.
    • Essential organs are not pain-sensitive, such as the brain and the liver are. 
  2. Cumulative tissue damage = result of multiplication of the affected tissue damage volume multiplied by the duration of exposure to the harmful agent.
    1. The intensity of tissue damage volume. (Per time unit) 
    2. Duration of exposure to the harmful agent.
  3. The Regeneration rate of the damaged tissue is directly proportional to the speed at which the pain passes. For example, skin cells recover quickly, so when we cut ourselves superficially with a knife, the pain passes relatively within a short time. 

It is relatively easy to produce a statistical estimate of objective pain, but the patient's subjective response to pain is more important than the intensity of the aim pain!


Apart from the brain and liver, most of the major organs in the human body are pain-sensitive.

  • We can feel pain in our bodies almost anywhere possible. Although there is no "brain pain," migraines are one of the most troublesome pests. (What hurts is not the brain itself)
  • The liver has no pain sensation, but the gallbladder and nearby organs feel pain. The pains of chronic liver patients (like me) are horrible because the body rots! But this is not a pain of the liver itself.
  • The pain intensity is often a subjective question; however, there are paralyzing pains in which the patient cannot function. Severe toothache, eye pain, earache, and prolonged migraines are examples of paralyzing pains. (The head, because of the multiplicity of nerves in it, is especially susceptible to pain)


Frequently asked questions and answers regarding pain in general and chronic pain in particular.

If nothing hurts me, a sign that I am healthy?

  • The answer is not necessarily. Damage to cells at low intensity often does not reach the threshold that requires an alarm! (Pain)

Is chronic pain a sign that I still have tissue damage?

  • Usually, the answer is, "Yes."

If the chronic pain intensity increased, was it a sign that my health condition had worsened?

  • If the pain intensity has increased significantly over time, and there have been no other (mental) changes, the answer is probably "Yes."

I have intermittent pain; what does this imply?

  • Intermittent pain may indicate an unstable immune system. The difficulty is in locating the causes of the phenomenon. (Nutrition, physical and mental lifestyle)


Physical pain is most often the result of injury (accidental or intentional) or illness.

  1. Blow, accident, burn, injury, etc. (Accidentally or intentionally) causes immediate inflammation. Sometimes, it also creates infection.  
  2. Local or chronic inflammation results from a pathogenic infectious processor without a present pathogen still producing inflammation.

Prominent examples:

  • When we have toothaches due to cavities in the teeth, the cause is a caries bacterial infection that causes inflammation, swelling, and pain.
  • If we are cut from a knife, the body's response is an inflammatory response—Swelling, redness, and closure of the bleeding wound. The pain is usually temporary and subsides within a few minutes.
  • Migraines are an inflammatory phenomenon with pains that can last indefinitely for consecutive days. Migraine is also an inflammatory phenomenon, except for the swelling we usually do not feel or see. (Jugular veins.)


Prolonged pain severely impairs the patient's quality of life; however, painkillers do not cure the disease itself; they only alleviate the symptoms at a painful cost.

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