State investigations of elder abuse, ranging from neglect to emotional abuse to physical abuse, more than doubled in Connecticut between 2011 and 2017, from 3,529 to 7,196. In 2017 alone, the state Department of Social Services (DSS) received 11,123 reports of elder abuse and decided that 7,196 warranted an investigation. That year, self-neglect—when adults are unable to provide for their own basic care—was the most common type of elder abuse reported to DSS, at 30 percent, followed by neglect by others, financial exploitation, emotional abuse, physical abuse, sexual abuse and abandonment. “It’s all trending up,” Dorian Long, DSS director of social work services, said. Some of the recent cases investigated by DSS Protective Services for the Elderly are chilling.