Altered mental status
From FOAM EMed Index
2 part series from 60 Second EM on altered mental status
Part I - The Differential: http://www.60secondem.com/archives/5042?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+60SecondEm+%2860+Second+EM%29
Part II - The Approach: http://www.60secondem.com/archives/5082
Overview on altered mental status with some DDx flow charts: http://ddxof.com/altered-mental-status/
Podcast from Pediatric Emergency Playbook on altered mental status in children: http://pemplaybook.org/podcast/altered-mental-status-in-children/
Great post on intussusception as a cause of altered mental status: http://www.foamem.com/2014/09/12/intussusception-altered-mental-status/