Management of New Onset Headaches with Irritability

Immediate Red Flag Assessment

New onset headaches with irritability require immediate evaluation for secondary causes, particularly subarachnoid hemorrhage, meningitis, intracranial mass, or temporal arteritis, before considering primary headache treatment, as recommended by the American College of Physicians and the American Academy of Neurology 1, 2, 3
The combination of new onset headache with irritability is a red flag that mandates urgent evaluation for secondary causes, according to the American Academy of Neurology 2
Critical red flags requiring emergency imaging include new onset in patients over 50 years old, progressive worsening of headache, altered consciousness, memory changes, or personality changes, and thunderclap onset, as suggested by the American Academy of Neurology 2
Headache with fever or neck stiffness suggests meningitis, and focal neurological symptoms or unexplained neurological findings on examination require immediate attention, as recommended by the American Academy of Neurology 2

Obtain urgent non-contrast head CT immediately if any red flags are present, particularly thunderclap onset, neurological deficits, or altered mental status, as recommended by the American College of Radiology 3
If CT is negative but high suspicion remains, proceed to lumbar puncture with spectrophotometric analysis for xanthochromia, as suggested by the American Academy of Neurology 3

For moderate to severe headache, first-line treatment includes a combination of triptan plus NSAID, or aspirin-acetaminophen-caffeine combination, as recommended by the American Headache Society 1, 4
For mild to moderate headache, NSAIDs alone or acetaminophen combined with NSAID are recommended, as suggested by the American Academy of Neurology 1, 2
If nausea or vomiting is present, add metoclopramide or prochlorperazine as adjunctive antiemetic, as recommended by the American Academy of Family Physicians 2, 5
Medications to avoid include opioids and butalbital-containing compounds, which lead to dependency and medication overuse headache, as warned by the American Headache Society 1, 2

If headaches continue to impair quality of life on ≥2 days per month despite optimized acute treatment, initiate preventive therapy with options including candesartan, propranolol, topiramate, or CGRP monoclonal antibodies, as recommended by the American Academy of Neurology 2, 4, 7