Gmonson,
Depersonalization is a person's subjective sense of being unreal, strange, or unfamiliar. Parts of the body may seem foreign, as may
mentalMental retardation
Mental status tests operations (such as thinking) and accustomed behavior. Sensations of a change in the body are common, eg feeling that one's arms or legs are bigger or smaller than usual. Most people suffering from depersonalization are aware of the disturbance in their sense of reality.
Depersonalization may occur in normal people, secondary to exhaustion, boredom, or sensory deprivation. It may also be a symptom in various neurological/medical disorders (such as epilepsy, migraine, brain tumors, hypoglycemia, and hypothyroidism, to name a few) and various psychiatric disorders (such as anxiety, depression, schizophrenia, and mescaline intoxication, to name a few). I am not aware of data supporting the theory of depersonalization being due to "self-hypnosis".
Clonazepam and venlafaxine are both effective in the treatment of anxiety disorders. Venlafaxine may be started at a dose of 37.5 mg a day, to reduce the risk of nausea, but the standard therapeutic dose is 150-225 mg a day. There are studies suggesting that anxiety disorders are best treated with a combination of medications and cognitive-behavioral therapy.I urge you to discuss your concerns further with your treating physician/psychiatrist, to consider having a thorough neurological/medical evaluation to exclude neurological/medical causes of your symptoms, and to consider increasing your medication doses.