 She was also found to have had a cavernous hemangioma, a congenital vascular brain abnormality that made Joyner subject to seizures.According to a family attorney, she had suffered a tonic-clonic seizure in 1990, and had also been treated for seizures in 1993 and 1994.According to the Sheriff-Coroner's office, the only drugs in her system when she died were small amounts of two common over-the-counter drugs, acetaminophen (Tylenol) and the antihistamine Benadryl.