Being surrounded by or encountering thorns in a dream often symbolizes challenging and prickly situations in waking life. Thorns represent obstacles, difficulties, or people who may hinder one's progress and cause pain or discomfort. This dream may serve as a warning to tread carefully and be wary of potential threats or adversaries. It suggests that the dreamer may need to adopt a cautious approach and protect themselves from negative influences in order to navigate through difficulties successfully. However, the specific context, emotions, and other symbols within the dream can further shape the interpretation.