A middle-aged male schizophrenic patient with a hypomanic state received painting therapy, as well as pharmacotherapy and supportive psychotherapy. As quantitative parameters of his painting, the time spent painting, painting area and painting area per minute were measured and investigated for an association with his mental state. His mental state was retrospectively assessed using medical records by the Clinical Global Impression-Severity. As a result, the painting time significantly decreased with the improvement of his hypomanic state. These findings suggest that measurement of the painting time may be a useful tool to understand the overall mental state of a patient.

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