What does it mean to dream about brain?
A brain often stands for thought, intellect, and the mind itself, your reasoning powers and how you make sense of things.
Four ways to read it
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream.
Freud
Freud would read the brain as the organ of thought set against the wishes of the body, reason wrestling with desire. An exposed or wounded brain can mark a fear of losing control of one's mind.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung would see the conscious, reasoning side of the self, balanced against the deeper wisdom of feeling and instinct. A brain in a dream may ask whether the dreamer is leaning too hard on intellect alone.
Jungian concept (our summary).Modern
Continuity ties the brain to waking concerns about thinking clearly, memory, and mental strain. It often appears when a person feels stretched by problems that demand hard reasoning.
Continuity hypothesis (our summary).Mythological
The seat of the mind has been placed in the head or the heart by turns across cultures, the prize of wisdom either way. To carry knowledge was a power as fearsome as any weapon in old story.
Rosmerta Publishing editorial synthesis (after Bulfinch; Brewer).