Kerry Kennedy Arrest -- Family Reportedly Believe She Suffered a Seizure

Kerry Kennedy's car crash and subsequent DWI arrest might have had nothing to do with drugs and instead could have have occurred because she suffered from a seizure -- this according to a new report.

Kennedy was arrested Friday AM after driving erratically and crashing into a tractor trailer on I-684 in NY. Police charged with driving while impaired by drugs after she allegedly admitted to taking an Ambien.

But a source tells the NY Post that the Kennedy family now believe the 52-year-old may have suffered a seizure instead. The source says, "She does not remember how she got to the side of the road. All she remembers is feeling very woozy."

The source adds that the Kennedy family now fears an undiagnosed medical condition may be to blame.