Differential Diagnosis for Daily Evening Headaches with Photosensitivity and Phonophobia

Primary Headache Disorders to Consider

The American Academy of Neurology suggests that photophobia and phonophobia are cardinal migraine symptoms that occur in the majority of migraine patients and are highly specific for this diagnosis 1, 2, 3
The International Headache Society defines chronic migraine as headaches occurring ≥15 days per month for >3 months, with migraine features on ≥8 days per month 4
The evening timing pattern is consistent with migraine, which can have circadian variation, according to the American Headache Society 1
Daily occurrence with these specific accompanying symptoms (photophobia and phonophobia) makes chronic migraine the primary consideration, as stated by the National Institute of Neurological Disorders and Stroke 2, 3

The American College of Emergency Physicians recommends that critical red flags requiring immediate investigation include thunderclap headache, atypical aura symptoms, recent head trauma, unexplained fever, impaired memory or cognitive changes, focal neurological symptoms that don't resolve, and progressive worsening pattern 4, 6
The American Academy of Neurology suggests that if any red flags are present, neuroimaging (MRI preferred), blood work, or lumbar puncture may be indicated to exclude meningitis, subarachnoid hemorrhage, intracranial mass lesions, and idiopathic intracranial hypertension 3, 4

The International Headache Society recommends documenting the following specific details: age at onset and duration of current daily pattern, exact headache frequency, pain characteristics, accompanying symptoms, aura symptoms, and medication use 1, 2, 6, 7
The American Headache Society suggests that validated screening tools, such as the ID-Migraine questionnaire and the Migraine Screen Questionnaire (MS-Q), can be used to diagnose migraine, with sensitivities of 81% and 93%, respectively 1, 2, 3
The National Institute of Neurological Disorders and Stroke recommends implementing a daily headache diary to record headache frequency, intensity, duration, accompanying symptoms, and all medication use 1, 2

The combination of daily headaches with both photophobia AND phonophobia is highly suggestive of chronic migraine rather than other primary headache disorders, according to the American Academy of Neurology 1, 3
The American Headache Society notes that while unilateral photophobia or phonophobia occurs more frequently in trigeminal autonomic cephalalgias (TACs) like cluster headache, these conditions typically present with severe unilateral pain, shorter attack duration, and ipsilateral cranial autonomic symptoms 5, 4

The American College of Physicians recommends not dismissing the diagnosis of chronic migraine simply because headaches occur daily, as chronic migraine by definition occurs ≥15 days per month 4
The American Academy of Neurology suggests not overlooking medication overuse, as MOH frequently complicates chronic migraine, and actively quantifying all acute medication use is necessary 5, 4
The American College of Radiology recommends not ordering neuroimaging routinely, as imaging is only indicated when red flags suggest secondary headache disorders, and unnecessary imaging can be harmful through radiation exposure 4