Meaning

• To rapidly reach a turning point or climax.

  "The escalating crisis between England and her American colonies came to a head when fighting broke out in 1775."

• To suddenly reveal that which has lain latent for a time.

  "His festering anger came to a head after the incident."

• To suddenly make mature or perfected that which was inchoate or imperfectly formed.

• (of an abscess) To reach its final stage.