Quite a few dreams show someone, or yourself, hung by the neck. There are many possible things this might indicate. For one thing it definitely links with death or the possibility of death. Such a death might be the result of self sacrifice, as show in the Tarot card of the hanged man, or it might be as the result of social action – a cause and effect of things done; a punishment because of feelings of guilt.
However, many hangings are due to suicide, and so might in a dream reflect depression, loss of any pleasure in life, a retreat from pain, or feelings of hopelessness or guilt.
Anything that hangs depends upon the thing it is hanging by, or from. So hanging in a dream shows a state of depending for support on one thing, as shown in the dream.
It also shows dependence, fear of falling or lacking support. Or it may be you have found something to hang onto that actually supports you in an otherwise difficult situation. It is then helpful to define what it is in your waking life that is giving such support.
A person who is hanged: Awful repression of self expression, to the point of feeling dead or depressed. See: Neck.
In some dreams however, there is a different sense of the hanging. It suggests not a death but an almost complete suppression of the life in one. A strangulation of the flow of pleasure and creativity that would otherwise stream through one. In such a case the rope needs to be removed and a new way of relating to oneself developed. See Exploring Dreams Techniques to use and Secrets of Power Dreaming
Useful Questions and Hints:
Do I see someone hanging by the neck or is it me?
Do I often depressed or unable to express myself adequately?
Is there someone or something that gives you support?
If you are dreaming of suicide explore the dream to find answers?