Difference between Come to a head and Come to mind

come to a head—reach a crisis or a climax:

• The dispute must come to a head soon; neither the union nor the owners will tolerate these interminable delays.

come to mind—occur to a person; be recollected:

• There are certain images that come to mind when people talk about beauty queens.

See also: come into someone’s head / go to someone’s head.