Letters15 May 2018
    Author, Article, and Disclosure Information

    Background: Between 2012 and 2016, a total of 14 persons in Massachusetts with a history of substance use developed an unusual amnestic syndrome that included acute, complete, and bilateral hippocampal lesions on magnetic resonance imaging (1).

    Objective: To describe an additional patient whose characteristics may extend our understanding of this syndrome.

    Case Report: In May 2017, a 30-year-old man was transferred from a local hospital in his native Maryland to a tertiary medical center in West Virginia for persistent memory impairment. According to family members, the patient had a history of heroin use, was recently discharged from a residential addiction ...