what is transient global am
Transient Global Amnesia The doctors reassured him that it was not a stroke, but rather a memory disorder called transient global amnesia. Transient global amnesia (TGA) is a type of amnesia involving the sudden, temporary disturbance in an otherwise healthy person's memory. The other main kinds of amnesia are called anterograde and retrograde amnesia. Anterograde amnesia is a type of memory loss associated with a trauma, disease, or emotional events.