THE EXTENT OF THE PROBLEM
Recent studies have estimated the prevalence of Post
Traumatic Stress Disorder (PTSD) as approximately 5 - 10% of the
general population. Incidence then varies following exposure to specific
traumatic incidents, e.g. 11% of road traffic accident survivors; 33 -
50% in rape victims, 22 - 50% in combat veterans; 50% in bomb survivors;
22 - 40% in air-crash survivors. Studies have also indicated that
approximately 20 - 40% of individuals exposed to traumatic events
experience problems lasting for more than one year, and 15 - 20% for
more than two years. Approximately half go on to develop a chronic form
of the disorder.
WHAT IS PTSD?
An individual can be said to be suffering from PTSD
if they develop, "…characteristic symptoms
following exposure to an extreme traumatic stressor involving direct
personal experience of an event that involves actual or threatened death
or serious injury, or other threat to one's physical integrity; or
witnessing an event that involves death, injury, or a threat to the
physical integrity of another person; or learning about unexpected or
violent death, serious harm, or threat of death or injury experienced by
a family member or other close associate."
PTSD IS CHARACTERISED BY THREE MAIN GROUPS OF
SYMPTOMS:
1. Re-experiencing the event in some way e.g. frequent
intrusive thoughts, nightmares and flashbacks.
2. Persistently avoiding situations associated with the trauma, or
experiencing a numbing of their emotions e.g. avoidance of people or
places that serve as reminders of the event.
3. Persistent symptoms of increased arousal, e.g. sleeplessness,
irritability and impaired concentration.
The symptoms described above must persist for at least a month following
the incident and cause significant impairment to social and occupational
functioning.
CAUSES
PTSD can be caused by
exposure to traumatic events as outlined above. These will be as diverse
as the following: a serious assault, road traffic accidents or
accidental injury, fires, bomb explosions and natural disasters such as
earthquakes. A variety of factors contribute to why one individual
develops the disorder, while another does not.
MOOD
Changes in mood are common in PTSD, ranging from
anger, shame, guilt, feeling isolated and alone, to a sense that life is
pointless, with a diminished interest in the future. Anxiety symptoms,
including feeling tense and on edge are often present, as is
irritability. The individual may also experience difficulty expressing
emotions. Moderate to severe depression is not uncommon.
COGNITIONS
These are characterized either by a pre-occupation with
the traumatic event or a strong urge to avoid thinking about the event.
Intrusive thoughts and images may keep re-occurring. Nightmares and
flashbacks may also occur and cause the person to feel as if they were
re-living the event. Reminders of the event, such as TV images or
newspaper articles may also trigger these symptoms. In addition, there
may be difficulty remembering certain parts of the event.
BIOLOGICAL
A person may also be in a state of heightened arousal and
experience a range of anxiety symptoms, e.g. sweating, palpitations and
startling easily. Biological feature of depression, such as sleep and
appetite disturbance may also occur.
BEHAVIOUR AND MOTIVATION
A person may often avoid situations, places and
activities associated with the trauma. They may cease previously enjoyed
activities. In addition, there may also be an adverse effect on family
relationships and occupational functioning. Drug and alcohol abuse is
not uncommon as a way of trying to forget.
TREATMENT
Almost all treatment for PTSD is psychologically
orientated and is aimed at dealing with the range of emotional and
behavioural problems outlined above. Medication is occasionally used as
an adjunct (see below). There is evidence that supportive counseling is
only of general, not specific use, in PTSD sufferers and that
many PTSD problems require specialized treatment.
Specific cognitive behavioural interventions include:
• Exposure in real life -
this involves the individual gradually confronting previously avoided
anxiety provoking situations until their anxiety subsides.
• Imaginal exposure -
this is a technique that involves direct exposure to memories of the
trauma and can involve the use of audio taped material. As with real
life exposure, this can also be graded and with the repeated practice
will eventually result in a reduction in anxiety and other related
symptoms.
• Cognitive therapy -
many individuals often find that their beliefs and assumptions about
themselves, others and their world have been "shattered" as a result of
their trauma. They may also experience feelings of guilt or anger.
Cognitive restructuring aims to address this and help them come to terms
with their experience.
• Eye Movement Desensitisation
and Reprocessing (EMDR) - is a relatively new technique, which
has been shown to be effective in the treatment for PTSD. In
essence, the technique involves pairing memories / disturbing thoughts
and the resultant emotions with repeated rapid and rhythmic eye
movements, resulting in the desensitisation of the memories. A similar
pairing of memory and a chosen positive cognition, with further eye
movements, constitutes the reprocessing component.
Treatment is individually tailored after thorough
assessment and only with the co-operation and collaboration of the
survivor. An average treatment programme may take place over ten to
twelve sessions, but this will vary in individual cases.
DEBRIEFING
Psychological debriefing is primarily a preventative
measure and is not intended to be 'therapy'. The aim of debriefing, is
to reduce the likelihood of the development of PTSD, by providing
an opportunity for the expression of feelings and a framework for
individuals to make sense of the traumatic experience.
MEDICATION
Anti-depressants can be very effective as an adjunct to
psychological treatment, as many PTSD sufferers also have
symptoms of clinical depression. Anti-depressants can also facilitate
participation in therapy and thereby optimize the outcome of treatment.
Medication alone may only achieve short-term improvement.