DEAR DOCTORS: I was recently home alone, and I remember feeling dizzy. The next thing I knew, I was at the hospital. My husband says I called him and asked for help, and he called 911. I have no memory of any of this. I was told I had a TGA. What causes it? How dangerous is it to have a TGA?
DEAR READER: Your medical team has determined that you experienced what is known as transient global amnesia. It is commonly shortened to TGA. This is a type of memory disturbance that occurs suddenly, and, as the word “transient” describes, is temporary. Episodes last less than 24 hours and are typically far shorter than that.
