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Consider what is pain from a neurological point of view.
There are two basic types of pain: acute and chronic. The first occurs as an alert, informing the brain from damage or possible damage if a particular stimulus persists. The latter, moreover, is not a warning and stays for a long time, even after the traumatic event has been cured.
Broadly speaking, pain developed in four steps:
1.a stimulus  Â
2nd   reception of nociceptors
3rd transmission  Â
  4.a and reception of the brain
A painful stimulus causes nerve endings to fire a signal to the central nervous system. The signal reaches the thalamus and travels to the cortex, the outermost layer of the brain. Only when the brain receives the signal in the cortex begins to feel pain. The whole process is called nociception (de Noce, a Latin word for damages or injuries).
Three types of stimuli cause pain:
• Â Â Â Â mechanics (such as cuts, punctures or pressure)
• Â Â Â Â thermal (heat)
• Â Â Â Â or chemical (from the inside of mediators of inflammation)
We collect a stimulus and follow the chain of nociception all the way to the brain. For example, suppose you kept a hammer and suddenly he dropped to his left toe.
You feel the sharp pain almost immediately because nociceptors pressure in the fingers sense the mechanical stimulus and send a signal through the neurons. Neurons are cells too long. A single neuron can connect your toe to the spinal cord.
The second link in the chain (the neurons of the spinal dorsal), amplifies the signal and transmits it to the thalamus. The third link connecting the thalamus with the cortex. Almost all sensory information (except olfactory) reaches cortex via the thalamus.
Looking more closely, one finds the hammer caused a small cut in the skin of a toe. Therefore, in addition of pressure stimuli, nociceptors fired a finger in the wound signal. Histamines and prostaglandins in the immune system invade the damaged area and perceived inflammation.
Without inflammation, tissue cut would never heal. However, certain enzymes release inflammation-stimulating chemicals the nerve endings and feels more pain. Hours later, you see the difference between pain caused by the shock and pain caused by cutting.
To alleviate pain, you take an aspirin. Aspirin, ibuprofen, works locally for blocking the effect of the enzyme, reduces inflammation, and therefore reduces pain.
However, you do not see the stimulus associated with chronic pain. Why? Because when one perceives a chronic pain stimulus may have disappeared several months or years Ago
There are several approaches for the treatment of chronic pain, depending on which of the three links in the chain of pain being attacked: locally, at the site of damaged tissue, the spinal cord or brain level.
Often damaged tissues causing chronic pain do not show local signs of inflammation. Acetaminophen (Tylenol), unlike aspirin, it has anti-inflammatory properties. Inhibits the production of prostaglandins, compounds lipids which exist in almost all body cells and cause pain due to sensitize spinal neurons.
Chiropractic (Chiro, hand, in Greek) is working on the second link in the chain, the treatment of mechanical disorders in the spine and joints.
Hypnosis and behavior therapy at the level of third party links. Acupuncture, massage therapy and other alternative practices carried out by any Toronto, Montreal or href = "http://www.totalwellnesssolution.ca/ontario-chiropractor.html"> Ontario chiropractor can also provide relief of chronic pain in all three levels.
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