bitten by snakes in dreams, I found the following:
Gillian Holloway, Ph.D. identifies being bitten by a snake as meaning different things. She says, "In many dreams a single snake will come to bite you, and you may in fact be bitten after a brief struggle. To your amazement though, you will not die, and may find that the situation is not as bad as you thought." According to Holloway you have this kind of dream if you are struggling with some problem, relationship or challenge. "Such a snake-ordeal is an important signal that you are going through a kind of initiation; a psychological and spiritual trial that has the potential to change your life for the better if you deal with it bravely and with a clear heart. You may have to give up something you thought you couldn't, or take a stand for your principles or faith."
When one is bitten by a snake in a dream, this often actually points to overcoming a situation that appeared dire. The a snake bit dream may point to learning to overcome a situation and regain your power in life. Snake bites can be viewed as in injection of wisdom, rather than life threatening venom.
An historical perspective:
In some cultures snakes are highly regarded and symbolize the ability to transcend into higher levels of consciousness or into areas of knowledge that exist outside perceived time and space. In the pre-Christian days, snakes were considered symbols of fertility, healing, and nurturing (the healing serpent representing a god). Post Adam and Eve, snakes are often considered symbols of temptation and evil, anger, and envy. Snakes emerging out of the ground may represent your unconscious or repressed materials coming to your conscious mind. Freud thought that the snake was a phallic symbol.
But wait, there's more!
It is amazing how many people have snake dreams! Most snake dreams seem to be disturbing and they leave the dreamer feeling anxious and afraid. There are no simple interpretations to the snake dreams. Each dreamer must consider their own situation and all of the details of the dream. Sometimes snakes may be phallic symbols and other times they represent negativity in our lives that hampers our progress and constantly threatens us. In the long run the snake may be a positive symbol; it may represent difficulties that lead us to the center of personality and result in feelings of completeness.