What does it mean if I have frequent panic attacks and feel almost out of my body sensation where I have to lay down?

Depersonalization. Feeling like you are standing outside yourself - as if watching another person - can occur with panic disorder. Other causes include: hypoglycemia, low blood pressure, medications, other anxiety disorders, stress, borderline personality disorder, narcolepsy, depression, migraine headaches, seizures (temporal lobe type), recreational drug use, and sleep deprivation. Treat underlying cause.