When bitten by a snake in a dream, it signifies worries and stress of the waking world troubling you. The snake can represent any person or situation causing you high undue stress levels. Seek out the trouble and take care of it before it consumes you or keep biting you in dreams.
A snake’s bite can signify something that is poisonous and deadly that got into your life when you were not paying attention or it could be an addiction.
If someone is dreaming about being bitten by a snake, it likely means that they are feeling overwhelmed or persecuted by some situation or person, and that they need to find a way out.