While you philosophically seek out the world itself, I exercise simply my effort on a maximum of appearances, in straight correlation with unknown realities.

1. Amnesia - this is when you can’t remember incidents or experiences that happened at a particular time, or when you can’t remember personal information.

2. Depersonalisation - a feeling that your body is unreal, changing or dissolving. It also involves out of body experiences, such as seeing yourself as if watching a movie or floating above.

3. Derealisation - the world around you seems unreal. You may see objects changing in shape, size or colour, or you may feel that other people are robots or generally unreal.

4. Identity confusion - feeling uncertain about who you are. You may feel as if there is a struggle within to define yourself.

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Sylvia Plath, The Unabridged Journals