Bilateral location
Pressure or tightening (nonpulsating quality)
Mild or moderate intensity
Not aggravated by routine physical activity such as walking
No nausea or vomiting (anorexia may occur)
No more<unk> an one of photophobia or phonophobia
Tension headache
Migraine headache
Cluster headache
Postpartum headache
Meningitis/encephalitis
Post-lumbar puncture headache
Neoplastic meningitis
Trigeminal neuralgia