Psychological characteristics of adults with IDDM. Comparison of patients in poor and good glycemic control

This study was conducted to evaluate selected psychosocial characteristics of contrasting groups of patients with insulin-dependent diabetes mellitus (IDDM), i.e., patients with persistently poor versus good glycemic control. Patients with chronic poor control reported feeling physically best at higher blood glucose levels than patients with good control. They also reported a higher threshold for physical symptoms caused by hyperglycemia without any difference in threshold for hypoglycemic symptoms. No differences between groups were found in level of diabetes knowledge, self-esteem, or psychiatric symptomatology. This study suggests that poorly controlled adult patients have underlying perceptions of hyperglycemic symptoms and physical well-being that distinguish them from patients with well-controlled diabetes. The design of this study does not allow for determination of the causal direction in this relationship. Although these patient reports about glycemic and physical symptoms may be post hoc justifications or unreliable beliefs, they also may be accurate perceptions of physical symptom experiences and therefore could influence their self-care activities with resulting chronic problems in glycemic control. Further research is needed to assess the validity of these observations and their possible role in long-term regulation of glycemia.