The most common presenting complaint of DID is depression, with headaches being a common neurological symptom. Co-morbid disorders can include substance abuse, eating disorders, and anxiety. Things like posttraumatic stress disorder (PTSD) and personality disorders are introjected behaviors only.
Fourteen of them were the notebooks Darwin used on his shore excursions during the voyage of the Beagle (1831-1836). This is the first complete edition of these important notebooks, thirty years in the making. The notebooks were also published in 2009 as a book: Gordon Chancellor and John van Wyhe eds.
This trip, only 88 years after Darwin's visit to GalÃ¡pagos (recorded in his Diary of the Voyage of the H.M.S. Beagle, is remarkable not only for the breadth of work done in a very short time, and for the fact that, in a world where it may take years after the fact for conference proceedings to be published, within six months after their return, nearly twenty-two scientific papers were already published or nearly ready to be so.