Which of the following constitutes a red flag headache in a child?

• A. Thunderclap onset
• B. Headache with progressive neuro deficits
• C. Headache relieved by routine activity
• D. Headache in children under 2 years old only

Answer: (B)

The main idea is recognizing signs that a child’s headache may be caused by something serious that needs urgent evaluation. The most concerning cue here is when the headache is accompanied by new or worsening neurological problems. Progressive neuro deficits point to an evolving intracranial issue—such as a brain tumor, abscess, hydrocephalus, or other focal CNS pathology—so they strongly indicate the need for prompt imaging and specialist assessment.

Thunderclap onset is indeed alarming and suggests an acute catastrophe like something vascular or hemorrhagic, so it’s a red flag as well, but in the context of identifying a persistent or evolving problem in a child, the presence of progressive neurological signs more clearly signals a dangerous or treatable intracranial process. A headache that is relieved by routine activity usually aligns with benign primary headaches, not a secondary, serious cause. Headache in very young children raises concern simply due to age, but by itself it doesn’t demonstrate ongoing deterioration or a focal brain issue, so it isn’t as strong a red flag in this scenario as progressive deficits.