The rural doctor who treated a West Australian nurse for neck pain before she was discharged from hospital cannot be blamed for her death, a coroner has found. Tamika Patricia Carol Ullrich died suddenly from a rare condition of chronic hydrocephalus, which made her susceptible to instability of her cardio- respiratory system, following a brief admission to the emergency department at Northam Hospital in December 2012. Coroner Barry King found Ms Ullrich died from natural causes.