Dissociative Identity Disorder is often caused by massive trauma during childhood at a point where it is to much pain for the victim to cope with.
Modern sciences like psychology have a hard time really understanding DID (abbr. for Dissociative Identity Disorder) and offer no hope for healing at all. Meanwhile there are societies which are causing this on purpose with the goal to breed things like supersoldiers, secret agents and sex slaves - in short, compliant people - for their sinister objectives and drives.
Sufferers are reporting things like alters sabotaging their relationships, experiencing amnesia barriers between personalities and isolation from other human beings.
The Bible described this condition nearly 2000 years ago! Jesus has the power to break down the shackles of this painful condition. Some even don't want any help if it means losing their alters - those deceiving spirits are known for making people addicted or feel dependant on them. If you suffer from this, please ask Him, Jesus Christ, for help and guidance unto deliverance - if you sincerely do this, he will save you and restore your life in a pace that you need:
Mark 5:6 (KJV) - But when he saw Jesus afar off, he ran and worshipped him,
And cried with a loud voice, and said, What have I to do with thee, Jesus, thou Son of the most high God? I adjure thee by God, that thou torment me not.
For he said unto him, Come out of the man, thou unclean spirit.
And he asked him, What is thy name? And he answered, saying, My name is Legion: for we are many.
And he besought him much that he would not send them away out of the country.
Now there was there nigh unto the mountains a great herd of swine feeding.
And all the devils besought him, saying, Send us into the swine, that we may enter into them.
And forthwith Jesus gave them leave. And the unclean spirits went out, and entered into the swine: and the herd ran violently down a steep place into the sea, (they were about two thousand;) and were choked in the sea.
And they that fed the swine fled, and told it in the city, and in the country. And they went out to see what it was that was done.
And they come to Jesus, and see him that was possessed with the devil, and had the legion, sitting, and clothed, and in his right mind: and they were afraid.
And they that saw it told them how it befell to him that was possessed with the devil, and also concerning the swine.
And they began to pray him to depart out of their coasts.
And when he was come into the ship, he that had been possessed with the devil prayed him that he might be with him.
Howbeit Jesus suffered him not, but saith unto him, Go home to thy friends, and tell them how great things the Lord hath done for thee, and hath had compassion on thee.
And he departed, and began to publish in Decapolis how great things Jesus had done for him: and all men did marvel.
Ephesians 6:12 (KJV) - For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.
Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;
And your feet shod with the preparation of the gospel of peace;
Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.
And take the helmet of salvation, and the sword of the Spirit, which is the word of God.