The snake is among the most ancient and layered dream symbols. It often points to transformation: just as a snake sheds its skin, the dreamer may be outgrowing an old identity, habit or relationship. In many traditions it also carries healing energy — the very sign of medicine.
A threatening snake can mirror a hidden fear, an unspoken tension, or a person whose intentions feel unclear. Being bitten often marks a wake-up call in an area of life you have been avoiding. Notice the snake's behaviour: a calm snake suggests quiet renewal, while a striking one asks you to face what you have been postponing.