DEAR DR. ROACH: I am a 67-year-old woman in good health. I received two doses of the Moderna vaccine. Within 16 hours of receiving the second dose I developed what was ultimately diagnosed as transient global amnesia after an extensive workup at our local hospital. My family was extremely concerned, and now they all say I shouldn't get a booster. I want to stay as safe as possible from COVID but certainly don't want to get trapped in a mental state where I can't function. I would appreciate your thoughts on whether or not I should get a booster. -- F.D.

ANSWER: Transient global amnesia is a terrifying experience for a person and for those around them. It begins with an abrupt onset of memory loss and disorientation, with the person often repeatedly asking questions about when and where they are; this is sometimes called "broken record" phenomenon. People are often concerned that it is a stroke. During this time, people are unable to make new memories. It most commonly lasts about six hours, and seldom, if ever, more than 12. It's most common in middle aged and older adults. Prompt evaluation is indicated to be sure this isn't anything more serious.

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Dr. Roach regrets that he is unable to answer individual letters, but will incorporate them in the column whenever possible. Readers may email questions to ToYourGoodHealth@med.cornell.edu or send mail to 628 Virginia Dr., Orlando, FL 32803.

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