Cause Unknown

This episode focuses on patients whose illnesses prove tricky to diagnose. Nine-year-old Tino is rushed to resus after slumping over her desk at school. Usually a lively young girl, she can't remember what day it is or her surname. She doesn't even recognise her own mum. Treating Tino is consultant Liz, but despite her years of experience, even she isn't initially certain what's wrong with Tino. Liz's concern is that Tino is displaying the symptoms of encephalitis, a viral infection which causes swelling of the brain and which, if not treated, can have devastating consequences. While Liz treats Tino with anti-viral drugs, her mum Tracey can only wait to see if her daughter's memory will return and if she will be restored to health. In majors, 45-year-old Karen arrives accompanied by her family. She's experiencing numbness down her left side and needs a scan. It soon becomes clear, however, that Karen's condition is more complicated than it first appears. Karen's daughter Samantha reveals that her mum experiences anxiety attacks that have worsened since the death of Karen's father. Karen's been told by various doctors over the years that her issue isn't physical, but psychological, but she won't accept it. Meanwhile, 11-year-old Bailey has been brought to King's after he was run over outside school by a slow moving car. He's broken his leg and has cuts to his face and body and has to endure the excruciating pain of having his broken leg physically re-straightened before it can be pinned. Exec Prods: Tom McDonald, Nick Curwin.