Which of the following is NOT a symptom of gambling disorder?

The symptom of experiencing euphoria while gambling is not specifically characteristic of gambling disorder. While individuals with a gambling disorder may experience various emotional responses associated with their gambling behavior, the focus of the disorder is not based on feelings of euphoria during gambling. Instead, this behavior is often linked to other aspects such as an increase in gambling to chase losses, preoccupation with gambling, and the negative impact on life due to gambling, rather than the positive emotional experience of euphoria.

In contrast, the other symptoms listed—being preoccupied with gambling, feeling restless or irritable when trying to cut down, and lying to conceal the extent of gambling—are well-established criteria for diagnosing gambling disorder. These symptoms highlight the compulsive nature of the disorder, the distress associated with efforts to reduce gambling behavior, and the deceit that often accompanies such an addiction.