Browse categories and answer follow-up questions to refine your symptom profile.
Triage and immediate safety
Immediate priorities
Airway risk
If decreased consciousness, airway protection pathway
Breathing risk
Hypoxia
Circulatory risk
Hypotension
Pain and vomiting control
If persistent emesis, IV route preference
Isolation considerations
Fever with meningismus
Secondary headache exclusion
High-risk features
Thunderclap onset
Peak intensity within 1 minute
New focal neurologic deficit
Persistent deficit between attacks
Altered mental status
New confusion
Fever or meningismus
Neck stiffness
Papilledema
Visual obscurations
Pregnancy or postpartum
Preeclampsia spectrum concern
Immunocompromise
HIV with low CD4
Anticoagulation or bleeding diathesis
Warfarin or DOAC use
Cancer history
Known metastatic disease
Head trauma
Recent fall or impact
Age over 50 with new headache
Giant cell arteritis concern
Pattern change
Progressively worsening frequency
Exertional or sexual trigger
Sentinel hemorrhage concern
ED pathway selection
Working pathway
Migraine-likely
Typical phenotype
Normal neurologic exam
No high-risk features
Secondary-headache workup
Any high-risk feature present
Abnormal neurologic exam
First or worst headache
Mixed
Migraine phenotype with new red flag
Key concepts
Migraine core concepts
Recurrent episodic headache disorder
Moderate to severe pain
Associated features
Nausea or vomiting
Photophobia
Phonophobia
Disability focus
Functional impairment
ED goal
Rapid symptom relief
Exclusion of secondary causes when indicated
Recurrence prevention strategy
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.