Stephen77 I want to to wish you well for completingyour doctorate.
I have to say something: I believe that there is a false understanding of the nature of ptsd in many psychiatrist and psychologists. From the middle of the 198x the medical community decided that,
- ptsd is a mental memory related disorder
- made to much emphasis to the Avoidance, nightmares and flashbacks symptoms of ptsd .
- because of this false believe -"ptsd is a mental memory related disorder", (in my opinion) they created a not so inefficient methods of treatments including : talking about trauma , exposure therapy and cbt. while the real reason and the core and nature of ptsd is a heightened perception of threats , not necessarily related to trauma cues.
The abnormal heightened sensitivity to threat leads to ongoing(sometimes 24/7) anxiety state , exaggerated startle responses to all stimuli, trauma or not trauma related , including noises, movements ,tactile stimuli, paranoid behaviour, avoidance of trauma stimuli (and general avoidance) insomnia and nightmares and so on.
Yes we can Definitely say that the trauma of life threatening event (real or not) leads to Structural changes in the brain and the central nervous system. what is the meaning of that? The answer is simple - we do not need to treat, understand, except or analyze the trauma. More than that, it doesn't matter the severity of the trauma. What matter is the functional, structural and hormonal implications of it, because this implications are the reason for the ptsd symptoms.
I know that this "theory " sounds controversial, but the results brutal rape, or combat trauma (all have ptsd) could be less symptomatic than some relative minor trauma like small car incident for example.
To make my point more clear i will give you a hypothetical extreme example of person getting severe ptsd from the boom the an exploded balloon made near to person x, if person x felt at the moment that it was a bomb.
This post is getting to long so I will emphasize the most important things.
UP to this day there is solids data from many trials ,experiments and studies both human and animal models of ptsd that a small organ in the brain called the amygdala plays a major role in ptsd Behaviour (the others regions in the brain that Associated with ptsd is the insula, prefrontal cortex, hypocampus and ventromedial prefrontal cortex - but there are some contradicted studies about the involvement of those structures in "our" (I too have ptsd:)) neurological disorder especially about the smaller hypocampus in ptsd patients -something that has not been proven yet). By the way, I used the word neurological and not psychiatric or mental because I believe that ptsd is a neurological condition or disorder that was caused by psychological trauma. like in a way that extreme stress can lead to a stroke - but we do not call stroke a
mental helf disorder. The same analogy works with PTSD.
So the most logical and beneficial solution to alleviate PTSD symptoms up to 90% improvement would be suppressing the hyper active amygdala in PTSD patients by drugs (well , unfortunately there is not a single drug yet, that can target specifically the amygdala) or by DBS - deep brain stimulation.
"Deep brain stimulation (DBS) is a surgical treatment involving the implantation of a medical device called a brain pacemaker, which sends electrical impulses to specific parts of the brain. DBS in select brain regions has provided remarkable therapeutic benefits for otherwise treatment-resistant movement and affective disorders such as chronic pain, Parkinson's disease, tremor and dystonia, and recently is used for treatment resistant depression and OCD (Obsessive-compulsive disorder)."
"The deep brain stimulation system consists of three components: the implanted pulse generator (IPG), the lead, and the extension. The IPG is a battery-powered neurostimulator encased in a titanium housing, which sends electrical pulses to the brain to interfere with neural activity at the target site"
The batteries in these generators typically last 3 to 5 years and are replaced in an outpatient procedure.
DBS procedures carry some risks. After all, it is a surgical procedure involving cutting open the scalp and implanting a device deep into the brain.
"side effects can occur in relation to the surgical procedure, the stimulation system, stimulation itself, and the periodic need to replace the battery".
But we have to remember that more than 40'000 people the world got dbs for tremor, Parkinson, ocd and even depression (it has very positive results for depression).
It is important to know that although dbs does has some risks (like any surgery - especially brain surgery) but the procedure is totally reversible - it does not change the brain structure, and if it does not help they can get it out.
So yes, DBS can suppress amygdala and as we know, I quote :
"The amygdala sends impulses to the hypothalamus for activation of the sympathetic nervous system, to the thalamic reticular nucleus for increased reflexes, to the nuclei of the trigeminal nerve and the facial nerve, and to the ventral tegmental area, locus coeruleus, and laterodorsal tegmental nucleus for activation of dopamine, norepinephrine and epinephrine"
So as you can see the amygdala is like a center of emotions with primary function in regulating responses to potential threats , it get sensory input from the thalamus (sensory center that responsible for most of the sensory signals ,like visual and auditory. then the amygdale send "orders" – sensory impulses to the hypothalamus for activation of the sympathetic nervous system that creates the fight or flight reaction.
Well, the last thing, dbs of the amygdala is Not a fantasy. In January 2013, a group of American doctors will do the first human trial ofdeep brain stimulation of the basolateral nucleus (BLn) of the amygdala, on both sides of the brain.
This is the info about pilot Study of Deep Brain Stimulation of the Amygdala for Treatment-Refractory Combat Post-Traumatic Stress DisorderI think they decided to include only combat veterans because 2 reasons:
- the effects of the combat trauma is usually very strong , I can say that combat stress reaction or shell shock is one of the untreatable ptsd causes. And those patients are often do not respond to cbt, exposure therapy or ssri drugs. In fact the combat stress can be so serious that the person become totally depended on care giving and prolonged and frequent hospitalizations.
- Many of them cannot live the house because of the "threatfeeling", vigilance ,and hyper arousal. It is something that is not easy to explain with words, but the best analogy is: you go to the book store but you feel like you are surrounded with enemies – the anxiety is not social (I had medium social anxiety before the ptsd, so I know the feeling) but a felling of physical threat like you are in a Boxing match. Sometimes it is so intense that you cannot tolerate any people staying near to you.
In another times you feel threat when the person you speak with making wide gestures with his hands.
This anxiety and feeling of danger is always with you. The interesting part that most of the sufferers most of the times are aware that there is no real danger, but their body still react in defensive way, ready to react to any attack.
The course of this hyper arousalstate is predictable isolation of society, depression and drug abuse in order to "feel normal". Many of the combat veterans, rape victims, or any kind of assault survivors live in this way for years – hardly going out – and when they do go ' they use alcohol, benzos, or marijuana just to decrease this feelings (I do it ,and I know others who do it).
Others use opiates, benzodiazapins, and even heroin, (dope) on a daily basis (because of the anti anxiety effects of those drugs) in order to be able to go to work . THOSE drugs CAN help for a short time (3 or 4 weeks) but they are all addictive, physiologically and psychologically, this fact will lead to dose increment and then to withdrawal symptoms. So basically saying this drugs are not effective for long term treatment.
This is the trial of dbs of the amygdala: that will take place in the USA and will include 6 veterans with severe ptsd
Combat PTSD Forum
I spoke by phone with the Principal Investigator: doctor Koek and he said to me that they have very good feelings about this treatment, that it might be the a treatment "near cure" and if the results will be as hope - they will expand it to civilian ptsd that did not get relief from drugs and psychological help.
I believe that in a couple of years (3 to 5) this procedure will be a very good option for patients with severe treatment resistant ptsd.
Like in essential tremor, (do not confused with parkinson ) when the meds don’t stop the tremors, and the tremors are severe - the doctor sends the patient to dbs. The surgery has between 70 to 100% of tremor reduction.
I believe that this procedure will lead to a new era of treatments and this era will come when we will stop treating ptsd as a mental disorder. I hope it will be soon.