Symptoms of PTSD fall into the following four categories. Specific symptoms can vary in severity.
Intrusion: Intrusive thoughts such as repeated, involuntary memories; distressing dreams; or flashbacks of the traumatic event. Flashbacks may be so vivid that people feel they are reliving the traumatic experience or seeing it before their eyes.
Avoidance: Avoiding reminders of the traumatic event may include avoiding people, places, activities, objects and situations that may trigger distressing memories. People may try to avoid remembering or thinking about the traumatic event. They may resist talking about what happened or how they feel about it.
Alterations in cognition and mood: Inability to remember important aspects of the traumatic event, negative thoughts and feelings leading to ongoing and distorted beliefs about oneself or others (e.g., “I am bad,” “No one can be trusted”); distorted thoughts about the cause or consequences of the event leading to wrongly blaming self or other; ongoing fear, horror, anger, guilt or shame; much less interest in activities previously enjoyed; feeling detached or estranged from others; or being unable to experience positive emotions (a void of happiness or satisfaction).
Alterations in arousal and reactivity: Arousal and reactive symptoms may include being irritable and having angry outbursts; behaving recklessly or in a self-destructive way; being overly watchful of one's surroundings in a suspecting way; being easily startled; or having problems concentrating or sleeping.
Many people who are exposed to a traumatic event experience symptoms similar to those described above in the days following the event. For a person to be diagnosed with PTSD, however, symptoms must last for more than a month and must cause significant distress or problems in the individual's daily functioning. Many individuals develop symptoms within three months of the trauma, but symptoms may appear later and often persist for months and sometimes years. PTSD often occurs with other related conditions, such as depression, substance use, memory problems and other physical and mental health problems.
Acute Stress Disorder
Acute stress disorder occurs in reaction to a traumatic event, just as PTSD does, and the symptoms are similar. However, the symptoms occur between three days and one month after the event. People with acute stress disorder may relive the trauma, have flashbacks or nightmares and may feel numb or detached from themselves. These symptoms cause major distress and problems in their daily lives. About half of people with acute stress disorder go on to have PTSD. Acute stress disorder has been diagnosed in 19%-50% of individuals that experience interpersonal violence (e.g., rape, assault, intimate partner violence).
Adjustment disorder occurs in response to a stressful life event (or events). The emotional or behavioral symptoms a person experiences in response to the stressor are generally more severe or more intense than what would be reasonably expected for the type of event that occurred.
Symptoms can include feeling tense, sad or hopeless; withdrawing from other people; acting defiantly or showing impulsive behavior; or physical manifestations like tremors, palpitations, and headaches. The symptoms cause significant distress or problems functioning in key areas of someone’s life, for example, at work, school or in social interactions. Symptoms of adjustment disorders begin within three months of a stressful event and last no longer than six months after the stressor or its consequences have ended.
The stressor may be a single event (such as a romantic breakup), or there may be more than one event with a cumulative effect. Stressors may be recurring or continuous (such as an ongoing painful illness with increasing disability). Stressors may affect a single individual, an entire family, or a larger group or community (for example, in the case of a natural disaster).
Disinhibited Social Engagement Disorder
Disinhibited social engagement disorder occurs in children who have experienced severe social neglect or deprivation before the age of two. Similar to reactive attachment disorder, it can occur when children lack the basic emotional needs for comfort, stimulation and affection, or when repeated changes in caregivers (such as frequent foster care changes) prevent them from forming stable attachments.
Disinhibited social engagement disorder involves a child engaging in overly familiar or culturally inappropriate behavior with unfamiliar adults. For example, the child may be willing to go off with an unfamiliar adult with minimal or no hesitation. Developmental delays including cognitive and language delays often co-occur with this disorder. Caregiving quality has been shown to mediate the course of this illness. Yet even with improvements in the caregiving environment some children may have symptoms that persist through adolescence.
The prevalence of disinhibited social engagement disorder is unknown, but it is thought to be rare. Most severely neglected children do not develop the disorder. The most important treatment modality is to work with caregivers to ensure the child has an emotionally available attachment figure.
Reactive Attachment Disorder
Reactive attachment disorder occurs in children who have experienced severe social neglect or deprivation during their first years of life. It can occur when children lack the basic emotional needs for comfort, stimulation and affection, or when repeated changes in caregivers (such as frequent foster care changes) prevent them from forming stable attachments.
Children with reactive attachment disorder are emotionally withdrawn from their adult caregivers. They rarely turn to caregivers for comfort, support or protection or do not respond to comforting when they are distressed. During routine interactions with caregivers, they show little positive emotion and may show unexplained fear or sadness. The problems appear before age 5. Developmental delays, especially cognitive and language delays, often occur along with the disorder.
Reactive attachment disorder is uncommon, even in severely neglected children. Treatment involves a therapist working with a child and their family in order to strengthen the relationship between the child and their primary caregivers.