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.
2. He waited more than 20 years to publish his groundbreaking theory on evolution. Darwinâs five-year voyage around the world on HMS Beagle, which ended in 1836, provided him with invaluable research that contributed to the development of his theory of evolution and natural selection.