pain...the danger message can be inhibited by messages arising from the brain (top-down) these...
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Pain
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PAIN
Why did it
happen to
you?
What is its
purpose?
Your
experiences? How?
What is it?
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Introduction
Pain: a natural way of protecting your body
↓
It alerts the body of potential danger
↓
The body responds
⇓
SURVIVAL
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Introduction
Acute pain:
Clear cause
E.g. pain following injury
Chronic pain:
No clear cause
duration > 3 months
20% of the general population
E.g. chronic headache
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Acute pain mechanisms
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Mechanical
Temperature
Acid/chemicals
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Acute pain mechanisms
The stimulus is transformed into an electrical current that rushes through the
nerve (cfr. electrical cable) towards the spinal cord.
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The mechanism of pain
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The danger message can be inhibited by messages arising from the brain (top-down)
These top-down messages work like a volume button of a radio: they can either strengthen or diminish the strength.
The mechanism of pain
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The body has a very powerful
pain inhibitory system / pain
control system, which is 60
times tronger than any type of
drug available for pain relief
The mechanism of pain
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24-7-2013 12 Herhaling titel van presentatie
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Tissue damage ≠ pain
pain ≠ tissue damage
Pain without tissue damage exists! :
The mechanism of pain
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Spinal cord
nociceptor
Nerve
injury
Nerve
pathways going
to the brain
Nerve pathways
arising from the
brain
brain
PAIN
The back door of the spinal cord
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Chronic pain
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Adaptation in chronic pain: ion gates stay open
longer & the number
of sensors↑
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danger
messages
normal
sensitization
spinal cord
neurons
no danger
messages
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pain
The pain matrix in the brain
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And yet everything is stationary…
24-7-2013 20 Herhaling titel van
presentatie
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normal
situation
hypersensitive
central nervous
system
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Spinal cord
nociceptor
Nerve
The back door of the spinal cord
injury
Nerve
pathways going
to the brain
Nerve pathways
arising from the
brain
brain
PAIN
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Why did it happen to you?
Depending on:
1) Amount of tissue damage
e.g.: broken leg vs. injured toenail
2) Genes
3) Coping behaviour This is the only thing
we can change!
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How do I have to apply this in daily
life?
• Less worrying about pain
• Try not to pay too much attention to the pain
• Physical activity!
• Avoid negative thoughts and stress!
• ….
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24-7-2013 26 Herhaling titel van
presentatie
pain
The pain matrix in the brain
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24-7-2013 27 Herhaling titel van
presentatie
The pain matrix in the brain
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Information leaflet
• Read it at home, but not today
• Write down any questions you have
• Ask for clarification the next session