The correct answer is depersonalization/ derealization disorder.
Depersonalization disorder (DPD) refers to a mental and psychological disorder in which a person reports feeling detached or disconnected from their physical body. Sufferers of DPD report the following symptoms:
1. Feeling like one is a dream state, and events around him/her are not real
2. Distortions in thought, perception and memory
3. Feeling like one is observing themselves outside his or her own body or "floating" above his or her body
4. Physical and/or emotional numbness to real life events and situations
5. A feeling of lack of control over one's speech and bodily movements