Headache subsequent to whiplash

Area of Science:

• Neurology
• Pain Medicine
• Traumatology

Background:

• Methodological inconsistencies in whiplash research hinder direct result comparison.
• Headache is a prevalent symptom following whiplash injury, occurring in acute and chronic phases.
• Existing literature highlights the frequent occurrence of headache in patients seeking specialist care for prolonged symptoms.

Purpose of the Study:

• To analyze the incidence and characteristics of headache following whiplash injury.
• To differentiate between pre-existing, de novo, and cervicogenic headache presentations post-whiplash.
• To address the variability in whiplash study methodologies and their impact on headache research.

Main Methods:

• Review and synthesis of existing whiplash study methodologies.
• Analysis of headache prevalence data across acute and chronic post-whiplash stages.
• Categorization of headache types, including cervicogenic and unspecified post-whiplash headaches.

Main Results:

• Headache prevalence ranges from 50% to over 75% in the acute stage and 20% to 30% in the early chronic stage.
• A subset of patients (8% at 6 weeks, 1% at 6 years) developed de novo headache with cervicogenic features.
• De novo post-whiplash headache can be cervicogenic or non-cervicogenic, with the latter more probable in the acute phase.

Conclusions:

• The heterogeneity of whiplash study designs complicates the interpretation of headache findings.
• Headache is a significant and frequent sequela of whiplash injury, with diverse origins.
• Further research with standardized methodologies is needed to better understand and manage post-whiplash headache.