Childhood trauma exposure is very common among alcohol-dependent inpatients

Accumulating evidence indicates that childhood trauma experience (CTE) may be an environmental susceptibility factor for a variety of psychiatric disorders, including alcohol dependence (AD). CTE can include sexual, physical, and emotional abuse as well as physical or emotional neglect. New research on single and multiple CTE among AD individuals undergoing inpatient detoxification and treatment has found significant rates of reported CTE among these individuals.

Results will be published in the June 2012 issue of Alcoholism: Clinical & Experimental Research and are currently available at Early View.

"Previous studies have found that alcoholic patients self-report higher rates of physical and sexual abuse in childhood compared to the general population," said Markus Heilig, clinical director at the National Institute on Abuse and Alcoholism (NIAAA) and the National Institute on Drug Abuse (NIDA). "A recent national survey estimated rates of 8.4 percent for physical abuse and 6.0 percent for sexual abuse in the general population. Among alcoholic patients, rates for physical abuse were reported at 24 percent and 33 percent for men and women, respectively, while rates for sexual abuse were reported at 12 percent and 49 percent for men and women, respectively. Importantly, 5.0 percent of men and 23 percent of women experienced both types of abuse, physical and sexual, suggesting that co-occurrence of different abuse types may be important as well."

However, noted Heilig, who is also the corresponding author for the study, much less is known about rates of other types of abuse and neglect, in particular emotional abuse, emotional neglect, and physical neglect.

"Because emotional abuse is difficult to define, and is greatly under-reported compared to physical and sexual abuse, true rates of emotional abuse are unknown," Heilig said. "Many recent studies have linked childhood emotional abuse and neglect to the same long-term consequences as physical and sexual abuse, such as increased rates of depression, anxiety, and even suicide."

Heilig added that he and his colleagues also wanted to look at the effects of experiencing multiple trauma types. "A person who experiences more than one type of abuse or neglect may be more severely affected in the long run and develop more problems later in life," he said. "By looking at a broader range of abuse and neglect types, we were able to investigate these questions."

Heilig and his colleagues examined 196 alcohol inpatients (134 men, 62 women) using structured clinical interviews for Diagnostic and Statistical Manual - Fourth Edition Axis I disorders as well as the Questionnaire, which measures all five types of abuse or neglect: physical and sexual abuse, emotional abuse, emotional neglect, and physical neglect.

"We had four key findings," said Heilig. "One, patients being treated for AD are likely to have experienced one or more types of childhood abuse and neglect. Two, increases the likelihood of developing anxiety disorders in addition to AD, while emotional abuse increases the likelihood of developing depression. Three, alcoholics who experienced childhood physical abuse may be more likely to have a history of suicide attempts. Four, alcoholics who experienced more than one type of abuse or neglect are especially at risk for developing a psychiatric disorder or for attempting suicide."

"This study clearly shows substantial rates of reported childhood traumatization in treated AD individuals and confirms previously reported clusters of early adversities in the life histories of these patients," observed Willemien Langeland, a freelance trauma researcher at Vrije University in Amsterdam, and at the University of Amsterdam. "From a research standpoint, it is remarkable to see that even within a population of chronic alcoholics in which co-morbid are highly prevalent, those individuals with histories of childhood trauma stand out for their degree of psychopathology."

"Our findings demonstrate that childhood emotional abuse is nearly as prevalent among alcoholic patients as physical and sexual ," said Heilig, "which is important because it helps to show that emotionally abused children, like those that have been physically or sexually abused, can develop behavioral and other health problems in adulthood. For example, we show that alcoholics who were emotionally abused may be more likely to have co-morbid depression and PTSD, and thus these individuals may be more difficult to treat than those without these disorders. In addition, we also found that alcoholics who experienced more than one type of CTE in childhood are even more at risk for a broad range of psychiatric disorders and for suicide attempts. We call this a 'dose-response' relationship, which means that with each increase in the number of CTE types experienced – the 'dose' – the likelihood of developing a psychiatric disorder – the 'response' – also increases."

Both Heilig and Langeland believe that clinicians need to take greater care when assessing prior life experiences in AD patients. "These highly co-morbid patients reporting cumulative exposure to traumatic stress in childhood are often seen in routine practice," observed Langeland. "These findings point to the importance of a more systematic trauma assessment in alcohol-treatment services. And I also urge clinicians to address alcohol use at every clinical encounter with children and adolescents that have been identified as victims of childhood trauma, as early interventions in abused children might improve their psychological as well as medical health."

"Members of the public shouldn't take lightly the potential effects of in or in any life stage," said Heilig. "Just because there may not be visible physical scars does not mean that no lasting damage has been done."

Provided by Alcoholism: Clinical & Experimental Research

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