Abnormal Psych and Disorders

Studying the brain has been an affective result in finding out the various neurochemicals that are involved with PTSD. Brain imaging systems nowadays focus on two brain structures, the amygdala and the hippocampus. The amygdala is involved with how we learn about our fear and hippocampus plays a role with our memory formation. Some research focuses on a hormonal system known as hypothalamic-pituitary

Several different factors can contribute to how a person responds to a traumatic stressor and scientist and theoreticians have found other factors can determine individuals who are more likely to develop PTSD when exposed to a catastrophic event. These factors can include their past exposure to trauma, their mental health history, their families’ history of psychological problem, age, gender, biological makeup, social network, as well accessibility to mental health treatment facilities.

After reading Chapter 2 of Ronald J. Comer’s book, Fundamentals of Abnormal Psychology, I now understand key principles of 4 models that that contribute to understanding abnormalities. The first model is the biological model, which can be linked to Roman and Greek times as I read in chapter 1. It mainly states that the cause of psychological abnormalities is that of physical illness. In addition, the abnormalities are introduced because of malfunctioning parts in the brain. This includes the possible malfunction of neurons that are found in the cerebrum and the possible malfunction of these neurons and the transmissions between them. Other factors may include genes, evolution and viral infections

However, the argument that exposure to traumatic event can always result in mental health problems has become controversial because it can stigmatize those who do not believe they have been affected in an adverse manner. Fortunately, only a small percentage of people experience severe enough lose or trauma reactions to meet the criteria for posttraumatic stress disorder (American Psychiatric Association, 2000), and most people appear to fully recover from any adverse effect within a relatively short period of time, and to successfully overcome potentially traumatic events with little or no disruption in their normal ability to function (Shalev, 2002). Therefore, it is important to note that “the emergence of interest in the concept of resilience comes at the peak of success of the concept of post-traumatic stress disorder (PTSD), serving as a reminder that

When humans undergo traumatic events that threaten their safety and wellbeing, they may become vulnerable to nightmares, fear, excessive anxiety, depression, and trembling. Post Traumatic Stress Disorder (PTSD) is a psychological illness that results from the occurrence of a “terribly frightening, life-threatening, or otherwise unsafe experience” (Posttraumatic Stress Disorder (PTSD), 2012). This condition often leads to unbearable stress and anxiety. PTSD is significantly prevalent as indicated by data from the National Co-morbidity Survey which shows that at a particular time in their lives, 7.8% of 5, 877 adults in America suffered from PTSD (Andrew & Bisson, 2009). In the general population, the lifetime prevalence is estimated at 8%,

Post-traumatic disorder (PTSD) is one of the leading mental issues in the world right now. It includes introduction to injury including passing or the danger of death, genuine damage, or sexual brutality. Something is traumatic when it is exceptionally startling, overpowering and causes a considerable measure of pain. Injury is regularly sudden, and numerous individuals say that they felt feeble to stop or change the occasion. Traumatic occasions might incorporate wrongdoings, common fiascos, mishaps, war or strife, or different dangers to life. It could be an occasion or circumstance that one encounters or something that transpires, including friends and family. The post-traumatic stress is not subject to any definite experience a priori,

Although posttraumatic stress disorder (PTSD) is sometimes considered to be a relatively new diagnosis, as the name first appeared in 1980, the concept of the disorder has a very long history. That history has often been linked to the history of war, but the disorder has also been frequently described in civilian settings involving natural disasters, mass catastrophes, and serious accidental injuries. The diagnosis first appeared in the official nomenclature when Diagnostic and Statistical Manual of Mental Disorders (DSM)-I was published in 1952 under the name gross stress reaction. It was omitted, however, in the next edition in 1968, after a long

Those diagnosed with PTSD have shown a reduction in the volume of the hippocampus. The hippocampus helps humans remember new memories and then be able to recall them later, and also helps identify between past and present memories. The amygdala is another section of the brain affected by PTSD, and the amygdala is responsible for processing emotions and fear. The ventromedial prefrontal cortex is shown to have a decreased size in cases. The ventromedial prefrontal cortex regulates negative emotions like stress, anxiety, and fear. The strange behaviours of the patients diagnosed with PTSD can be explained by the damage to the brain. “Researchers believe that the brain changes caused by PTSD increase the tendency of a person developing other psychotic and mood disorders” (brainblogger.com). The brain is like a machine made up of small parts, and if one of these parts break, the machine does not function

It has been founded that forms both emotional trauma and disorders such as PTSD have a quite effect on human’s

At least 50% of all adults and children are exposed to a psychologically traumatic event (such as a life-threatening assault or accident, humanmade or natural disaster, or war). As many as 67% of trauma survivors experience lasting psychosocial impairment, including post-traumatic stress disorder (PTSD); panic, phobic, or generalized anxiety disorders; depression; or substance abuse.(Van der Kolk, et al, 1994) Symptoms of PTSD include persistent involuntary re-experiencing of traumatic distress, emotional numbing and detachment from other people, and hyperarousal (irritability, insomnia, fearfulness, nervous agitation). PTSD is linked to structural neurochemical changes in the central nervous system which may have a direct

PTSD was first taken seriously when the Vietnam veterans returned from the war. Combat experience is the most commonly linked to this disorder. However, studies have shown that there are many different causes. These studies were applied to a wide variety of traumas that people have experienced in various horrific events. According to The National Institute of Mental Health, “about 4% of American adults ages 18-54 suffers from PTSD in a given year. These people have served in wars, have been raped or mugged, lived through natural disasters, terrorist attacks or car or plane crashes” (Mitchell). Anyone who experiences an unnerving situation is at risk for Post Traumatic Stress Disorder. PTSD is seen as more of an archaic disorder in the

“Several studies have shown that kill- ing in combat significantly predicted PTSD symptoms after controlling for combat exposure in samples from the Vietnam, Gulf War, and the Iraq War (e.g., Fontana & Rosenheck, 1999; Maguen et al., 2010, 2009; Maguen, Vogt, et al.,

Posttraumatic stress disorder (PTSD) is a widespread disorder that affects certain individuals psychologically, behaviorally, and emotionally following the experience of a traumatic event (Lee et al., 2005, p. 135). However, because of inconsistencies regarding the percentage of individuals who experience PTSD and the percentage of individuals who subsequently develop PTSD, researchers hypothesize that both biological and environmental factors contribute to the development of PTSD (Wolf et al. 2010, p. 328). In order gain a better understanding of this disorder and to discover contributing and predicative factors which contribute to the development of PTSD, this paper analyses the historical context and prevalence of PTSD, the

by the brain to other parts of the body are not normal in people with

The amygdala is known to learn from exposure to fear and store assessment of threat–related stimuli. The prefrontal cortex is involved in extinction and the retention of fear and is connected to the amygdala. Finally, the hippocampus encodes the context during fear learning process and sends it to the amygdala. People with PTSD have hyper-activity in the amygdala, while having hypo-activity in the prefrontal cortex and there is reduction of the hippocampus volume. This reduction may limit proper evaluation and categorization of the experience. A study on Vietnam soldiers revealed that lesions in the amygdala and prefrontal cortex resulted in the absence of PTSD. To get further into the molecular level studies been done on the hormonal system. “Stress is known to contribute to the pathogenesis of a variety of disorders, including the majority of psychiatric like major depression and posttraumatic stress disorder.” (http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3825244/pdf/DM30-02-343616.pdf). Research has revealed evidence that a hormonal system known as the hypothalamic-pituitary-adrenal (HPA) axis is the one that gets disrupted in people with PTSD. The hormonal system is involved in normal stress reactions, so the disruption of this system in people with PTSD creates this “false alarm”. It has been suggested by some scientist that the dysfunction of the HPA system results in hippocampal damage in people with PTSD. Damage in the hormones is caused by damage to