Not knowing the exact nature of the affliction, it is even more difficult to pinpoint the cause. At the time, and in subsequent historical writing, a wide range of opinions has been offered. Peter’s convulsions have been ascribed to the traumatic horror he suffered in 1682 when, as a ten-year-old boy, he stood by his mother and watched the massacre of Matveev and the Naryshkins by the rampaging Streltsy.
