Abstract
BackgroundIrritable bowel syndrome (IBS) appears to have a bidirectional interaction with both depressive and anxiety-related complaints. However, it remains unclear how exactly the psychological complaints, at the individual level, are related to somatic symptoms on a daily basis. This single case study investigates how somatic and psychological variables are temporally related in a patient with irritable bowel syndrome.Case reportThe patient was a woman in her mid-twenties with an IBS diagnosis. She reported frequent soft bowel movements (5–6 times per day), as well as flatulence and abdominal pain. She resembled a typical IBS patient; however, a marked feature of the patient was her high motivation for psychosomatic treatment as well as her willingness to try new strategies regarding the management of her symptoms. As an innovative approach this single case study used a longitudinal, observational, time series design. The patient answered questions regarding somatic and psychological variables daily over a period of twelve weeks with an online diary. The diary data was analysed using an autoregressive (VAR) modeling approach. Time series analyses showed that in most variables, strong same-day correlations between somatic (abdominal pain, daily impairment) and psychological time series (including coping strategies) were present. The day-lagged relationships indicated that higher values in abdominal pain on one day were predictive of higher values in the psychological variables on the following day (e.g. nervousness, tension, catastrophizing, hopelessness). The use of positive thinking as a coping strategy was helpful in reducing the pain on the following days.ConclusionIn the presented case we found a high correlation between variables, with somatic symptoms temporally preceding psychological variables. In addition, for this patient, the use of positive thoughts as a coping strategy was helpful in reducing pain.
Highlights
Irritable bowel syndrome (IBS) appears to have a bidirectional interaction with both depressive and anxiety-related complaints
In the presented case we found a high correlation between variables, with somatic symptoms tempo‐ rally preceding psychological variables
For this patient, the use of positive thoughts as a coping strategy was helpful in reducing pain
Summary
Irritable bowel syndrome (IBS) appears to have a bidirectional interaction with both depressive and anxiety-related complaints. It remains unclear how exactly the psychological complaints, at the individual level, are related to somatic symptoms on a daily basis. This single case study investigates how somatic and psycho‐ logical variables are temporally related in a patient with irritable bowel syndrome. Case report: The patient was a woman in her mid-twenties with an IBS diagnosis She reported frequent soft bowel movements (5–6 times per day), as well as flatulence and abdominal pain. By looking at specific psychological variables it was found that catastrophizing is directly associated with IBS symptom severity, while anxiety is indirectly related to IBS symptom severity [9]
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