Better Understanding of D.I.D & id, ego & superego

A person dealing with DID/MPD can have anywhere from 2 to over 100 personalities inside them, with the average being 10.

In most cases the person with D.I.D has experienced trauma in their younger years.

Another thing about id, ego and super ego is it exists in the mind, not in the fabric of the brain. Meaning there are no links to the nervous system in the "Me, Myself & I" construct of Id, Ego and Super-Ego; whereas in DID/MPD there are actual alterations to the biology of the brain and body between personalities, meaning linguistic skills, learning patterns, chemistry, mental and emotional development, facial structure (sometimes). It's not uncommon for personalities to have allergies, food intolerance, pain levels (very common), etc., that the others do not share.

D.I.D personalities can have their own biological differences, whereas Id,ego & superego only exist in the mind.

Id-the impulsive, child-like portion of the psyche that operates on the "pleasure principle" and only takes into account what it wants and disregards all consequences.
Id is equivalent to the devil sitting on one's shoulder.

Super-Ego-plays the critical and moralizing role in the psyche, aims for perfection, includes ego's ideals, punishes misbehavior with feelings of guilt.
Super-ego is equivalent to the angel on one's shoulder.

Ego- the organized, realistic portion on the psyche that acts according to the "reality principle" and seeks to please the id’s drive in realistic ways that will benefit in the long term rather than bringing grief.
Ego is equivalent to one's conscience.


http://just-call-me-frank.blogspot.co.uk/2012/04/peek-into-id-ego-and-super-ego.html