Erratum

In (1), the following error was published on page 2 of the article.

Table 1

5. No loss of consciousness, or loss of consciousness ≥ 30 min

The time value was incorrect and the text should have read:

Table 1

5. No loss of consciousness, or loss of consciousness < 30 min

The corrected version of the table appears below:

Table 1

The International Headache Classification 2nd Edition diagnostic criteria of chronic post-traumatic headache

5.2	New headache occurring < 7 days after and lasting > 3 months after head trauma or after regaining consciousness or memory
5.2.1	CPTH with moderate or severe head injury meaning at least one of the following:
	1. Loss of consciousness > 30 min
	2. Glasgow Coma Scale < 13
	3. Posttraumatic amnesia > 48 h
	4. Imaging demonstration of a traumatic brain lesion (cerebral haematoma, brain contusion or skull fracture)
5.2.2	CPTH with mild head injury meaning all of the following:
	5. No loss of consciousness, or loss of consciousness < 30 min
	6. Glasgow Coma Scale ≥ 13
	7. Symptoms or signs diagnostic of concussion

We apologize for this error.