JoAnne Michael’s symptoms started with dizziness and forgetfulness before down spiraling into severe confusion, crying jags, and brain seizures. ER doctors at her local hospital initially thought she was on drugs. JoAnne, terrified, wondered if she was dying. Luckily, she had a guardian angel by her side: her mother, a retired nurse practitioner, who took her to Mayo Clinic, where the clinical experience and expertise of neurologist Andrew McKeon, M.B., B.Ch., M.D., helped give her a diagnosis and hope for a journey back to health.