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.
HMS Beagle. Launched in 1820 at Woolwich Royal Dockyard on the Thames, the Beagle was a 90ft, 10-gun brig, one of the commonest class of warships built by the Navy. After several years' service, it was refitted as a hydrographic survey vessel and subsequently placed under the command of Robert Fitzroy.