PYC4802
EXAM PACK
,Question 1: The Development of PTSD in Adults in South Africa
[25 Marks]
Definition and Diagnostic Criteria of PTSD (DSM-5)
Post-Traumatic Stress Disorder (PTSD) is a psychological disorder that can develop in
individuals who have experienced or witnessed a traumatic event. These events often
involve real or perceived threats to life, severe injury, or sexual violence. According to
the Diagnostic and Statistical Manual of Mental Disorders – Fifth Edition (DSM-5),
PTSD is diagnosed when an individual presents with a specific set of symptoms
following trauma. The criteria include:
1. Traumatic Exposure: The individual must have been exposed directly or
indirectly (e.g., witnessing or learning about trauma involving close others) to
actual or threatened death, serious injury, or sexual violation.
2. Intrusion Symptoms: The trauma is persistently re-experienced through
intrusive thoughts, recurring distressing dreams, flashbacks, or emotional
distress and physiological reactions when exposed to trauma-related cues.
3. Avoidance: There is active avoidance of distressing memories, thoughts,
feelings, or external reminders (people, places, objects) associated with the
traumatic event.
4. Negative Changes in Cognition and Mood: This includes distorted blame of
self or others, persistent negative emotions (e.g., fear, anger, shame), loss of
interest in activities, and feelings of detachment or estrangement from others.
5. Alterations in Arousal and Reactivity: Symptoms may include irritability or
aggression, hypervigilance, exaggerated startle responses, difficulties with
concentration, and sleep disturbances.
6. Duration and Impairment: These symptoms must persist for more than one
month and result in significant distress or impairment in social, occupational, or
other important areas of functioning.
,Biological Development of PTSD
From a biological perspective, PTSD is associated with abnormalities in the body's
stress regulation systems. The hypothalamic-pituitary-adrenal (HPA) axis, which
controls the body’s response to stress, becomes dysregulated in individuals with PTSD.
This can result in an exaggerated or prolonged stress response.
Key brain regions involved include:
The amygdala, which becomes overactive and is responsible for heightened fear
and emotional responses.
The hippocampus, which typically helps regulate memory and contextualizes
fear, often shows reduced volume in individuals with PTSD, contributing to
difficulties in distinguishing safe environments from dangerous ones.
The prefrontal cortex, responsible for executive functioning and regulation of
emotions, may exhibit decreased activity, which impairs the ability to manage
fear responses effectively.
Additionally, imbalances in neurotransmitters such as serotonin, norepinephrine, and
dopamine can exacerbate symptoms, affecting mood, arousal levels, and the
processing of fear.
Psychosocial Stressors Relevant to the South African Context
In South Africa, adults are frequently exposed to a variety of traumatic experiences due
to ongoing socio-economic challenges, high crime rates, and historical trauma. The
following are common psychosocial stressors that contribute to the development of
PTSD:
, Violent Crime: South Africa has high rates of interpersonal violence, including
armed robbery, physical assault, and murder. Repeated or chronic exposure to
such violence increases vulnerability to PTSD.
Gender-Based Violence (GBV): Women, in particular, are at significant risk due
to high incidences of sexual assault, domestic abuse, and femicide. Survivors of
GBV often face both acute and prolonged psychological trauma.
Poverty and Unemployment: Economic instability can create chronic stress,
and in combination with exposure to crime or violence, increases susceptibility to
PTSD.
Historical and Intergenerational Trauma: The lingering psychological effects of
apartheid, systemic inequality, and displacement have had long-term
consequences on mental health, making communities more vulnerable to
trauma-related disorders.
Lack of Access to Mental Health Services: In many rural and low-income
urban areas, access to timely mental health interventions is limited, which can
lead to untreated or chronic PTSD symptoms.
Exposure to Accidents and Natural Disasters: Motor vehicle collisions,
workplace injuries, and natural disasters like floods or fires also contribute to the
pool of traumatic events experienced by South Africans.
Conclusion
PTSD is a multifaceted disorder influenced by both biological mechanisms and
environmental exposures. In South Africa, the prevalence of trauma due to crime,
violence, and socio-political history has made PTSD a pressing public health issue.
Understanding its development through both the lens of neuroscience and psychosocial
factors is critical for designing effective prevention and treatment strategies.
EXAM PACK
,Question 1: The Development of PTSD in Adults in South Africa
[25 Marks]
Definition and Diagnostic Criteria of PTSD (DSM-5)
Post-Traumatic Stress Disorder (PTSD) is a psychological disorder that can develop in
individuals who have experienced or witnessed a traumatic event. These events often
involve real or perceived threats to life, severe injury, or sexual violence. According to
the Diagnostic and Statistical Manual of Mental Disorders – Fifth Edition (DSM-5),
PTSD is diagnosed when an individual presents with a specific set of symptoms
following trauma. The criteria include:
1. Traumatic Exposure: The individual must have been exposed directly or
indirectly (e.g., witnessing or learning about trauma involving close others) to
actual or threatened death, serious injury, or sexual violation.
2. Intrusion Symptoms: The trauma is persistently re-experienced through
intrusive thoughts, recurring distressing dreams, flashbacks, or emotional
distress and physiological reactions when exposed to trauma-related cues.
3. Avoidance: There is active avoidance of distressing memories, thoughts,
feelings, or external reminders (people, places, objects) associated with the
traumatic event.
4. Negative Changes in Cognition and Mood: This includes distorted blame of
self or others, persistent negative emotions (e.g., fear, anger, shame), loss of
interest in activities, and feelings of detachment or estrangement from others.
5. Alterations in Arousal and Reactivity: Symptoms may include irritability or
aggression, hypervigilance, exaggerated startle responses, difficulties with
concentration, and sleep disturbances.
6. Duration and Impairment: These symptoms must persist for more than one
month and result in significant distress or impairment in social, occupational, or
other important areas of functioning.
,Biological Development of PTSD
From a biological perspective, PTSD is associated with abnormalities in the body's
stress regulation systems. The hypothalamic-pituitary-adrenal (HPA) axis, which
controls the body’s response to stress, becomes dysregulated in individuals with PTSD.
This can result in an exaggerated or prolonged stress response.
Key brain regions involved include:
The amygdala, which becomes overactive and is responsible for heightened fear
and emotional responses.
The hippocampus, which typically helps regulate memory and contextualizes
fear, often shows reduced volume in individuals with PTSD, contributing to
difficulties in distinguishing safe environments from dangerous ones.
The prefrontal cortex, responsible for executive functioning and regulation of
emotions, may exhibit decreased activity, which impairs the ability to manage
fear responses effectively.
Additionally, imbalances in neurotransmitters such as serotonin, norepinephrine, and
dopamine can exacerbate symptoms, affecting mood, arousal levels, and the
processing of fear.
Psychosocial Stressors Relevant to the South African Context
In South Africa, adults are frequently exposed to a variety of traumatic experiences due
to ongoing socio-economic challenges, high crime rates, and historical trauma. The
following are common psychosocial stressors that contribute to the development of
PTSD:
, Violent Crime: South Africa has high rates of interpersonal violence, including
armed robbery, physical assault, and murder. Repeated or chronic exposure to
such violence increases vulnerability to PTSD.
Gender-Based Violence (GBV): Women, in particular, are at significant risk due
to high incidences of sexual assault, domestic abuse, and femicide. Survivors of
GBV often face both acute and prolonged psychological trauma.
Poverty and Unemployment: Economic instability can create chronic stress,
and in combination with exposure to crime or violence, increases susceptibility to
PTSD.
Historical and Intergenerational Trauma: The lingering psychological effects of
apartheid, systemic inequality, and displacement have had long-term
consequences on mental health, making communities more vulnerable to
trauma-related disorders.
Lack of Access to Mental Health Services: In many rural and low-income
urban areas, access to timely mental health interventions is limited, which can
lead to untreated or chronic PTSD symptoms.
Exposure to Accidents and Natural Disasters: Motor vehicle collisions,
workplace injuries, and natural disasters like floods or fires also contribute to the
pool of traumatic events experienced by South Africans.
Conclusion
PTSD is a multifaceted disorder influenced by both biological mechanisms and
environmental exposures. In South Africa, the prevalence of trauma due to crime,
violence, and socio-political history has made PTSD a pressing public health issue.
Understanding its development through both the lens of neuroscience and psychosocial
factors is critical for designing effective prevention and treatment strategies.
