Macbeth is in a room in Dunsinane. A servant comes to update him on the opposing army's movements, and Macbeth mocks him and tells him that the movements of Malcolm's forces make little difference because he does not have to fear anyone born of a woman. Even then, he need not fear anyone until the Birnam wood moves to Dunsinane.
The servant tells him, nonetheless, that the English force of ten thousand soldiers is on its way to the castle. Macbeth, although he should have no reason to fear because of the prophecies given to him by the three witches, calls for his armor-bearer to help him prepare for battle.
Macbeth asks the doctor about Lady Macbeth's condition, and the doctor claims that because the illness is caused by her own fantasies, he cannot ease the troubles that keep Lady Macbeth from rest. Macbeth asks him to find some way to root out the trouble so that Lady Macbeth can be healthy and happy again. While Macbeth repeats again the prophecy of the witches, the doctor whispers to the audience that if he could get away from Dunsinane now, there is no amount of money that would bring him back again.
