Acute Headache in Adults: A Diagnostic Approach

Area of Science:

• Neurology
• Primary Care Medicine

Background:

• Most headaches encountered in primary care are benign.
• Tension-type headache is common, but migraine is more debilitating and frequently presents in primary care settings.
• Distinguishing primary headaches from secondary causes is crucial for appropriate management.

Purpose of the Study:

• To outline methods for differentiating primary and secondary headaches.
• To identify key features and red flags indicative of serious headache causes.
• To guide neuroimaging decisions in headache evaluation.

Main Methods:

• Detailed history and physical examination to identify headache characteristics.
• Utilizing systematic frameworks like the SNNOOP10 mnemonic for acute headache assessment.
• Employing neuroimaging (CT, MRI) and lumbar puncture for specific clinical indications.

Main Results:

• Specific signs like predictable timing, sensory sensitivities, family history, or normal neurological exams can suggest migraine.
• Red flag symptoms (thunderclap onset, fever, meningeal signs, altered consciousness) necessitate immediate evaluation.
• Noncontrast head CT is the initial imaging choice for emergent cases; MRI is preferred for less urgent concerning features.

Conclusions:

• A careful clinical evaluation is paramount in distinguishing benign primary headaches from secondary causes.
• Prompt recognition of red flags ensures timely intervention for potentially life-threatening conditions.
• Neuroimaging is reserved for headaches with concerning features or red flags, not for all primary headache disorders.