In a 60-year-old woman with a 5‑week history of right‑sided humming tinnitus, left‑sided pulsatile tinnitus, and an acute headache accompanied by hearing loss and vomiting, without visual changes, migraine history, or sinus congestion, what is the recommended diagnostic work‑up and initial management?

Urgent Imaging Required: This Patient Needs Immediate Vascular and Structural Evaluation

This 60-year-old woman requires urgent imaging with CT angiography (CTA) of the head and neck or MRI/MRA to evaluate for life-threatening vascular pathology, given the acute presentation of pulsatile tinnitus with severe headache, hearing loss, and vomiting.

Clinical Reasoning

This presentation is highly concerning for several reasons that demand immediate action:

Red Flags Present

• Pulsatile tinnitus (left ear) - indicates potential vascular etiology
• Acute onset with severe headache - suggests possible vascular event
• Associated hearing loss - indicates structural involvement
• Vomiting with headache - raises concern for increased intracranial pressure or vascular catastrophe
• No prior migraine history - makes benign headache less likely at age 60

The combination of these symptoms, particularly the acute headache with vomiting and bilateral tinnitus (pulsatile on one side, humming on the other), raises serious concern for:

• Arterial dissection (carotid or vertebral)
• Dural arteriovenous fistula
• Intracranial hypertension with venous sinus abnormalities
• Vascular malformation
• Sigmoid sinus wall abnormalities

Recommended Diagnostic Algorithm

Step 1: Immediate Clinical Evaluation

Perform focused examination looking for:

• Otoscopic exam: Check for vascular retrotympanic mass (visible pulsating mass behind tympanic membrane)
• Auscultation: Listen over mastoid, periauricular area, orbit, and neck for objective bruit
• Neurologic exam: Assess for focal deficits, cranial nerve involvement, or signs of increased intracranial pressure
• Cardiovascular exam: Blood pressure measurement (hypertension associated with intracranial hypertension)

Step 2: Audiometric Testing

Obtain formal audiogram to document:

• Type and degree of hearing loss
• Unilateral vs bilateral involvement
• Pattern suggesting retrocochlear pathology

Step 3: First-Line Imaging (Choose Based on Availability)

Option A: CT Angiography (CTA) Head and Neck 1

• Advantages: Rapidly available, excellent for vascular anatomy and bone detail
• Use mixed arterial-venous phase timing (20-25 seconds post-contrast)
• Evaluates for: arterial dissection, dural AVF, vascular variants, sigmoid sinus abnormalities, jugular bulb dehiscence
• Temporal bone reconstructions can be created from source images
• Primary considerations: vascular malformations, aberrant vascular anatomy, intracranial hypertension with venous sinus stenosis 1

Option B: MRI/MRA Head and Neck 1

• Advantages: No radiation, excellent soft tissue detail
• Include internal auditory canal sequences
• Evaluates for: vascular malformations, intracranial masses, venous sinus thrombosis, intracranial hypertension
• May miss some bony abnormalities that CT would detect

Step 4: Additional Imaging if Initial Studies Negative

If strong clinical suspicion persists despite negative CTA or MRI/MRA:

• Digital subtraction angiography (DSA) - gold standard for detecting subtle dural AVF 2
• Dedicated temporal bone CT - if not already obtained, evaluates for paraganglioma, semicircular canal dehiscence, osseous abnormalities 1

Critical Pitfalls to Avoid

1. Do not dismiss as migraine - While vestibular migraine can cause tinnitus and hearing loss 3, 4, this patient has no migraine history and the acute presentation with severe headache and vomiting demands vascular evaluation first

2. Do not delay imaging for audiometry - While audiometry is important, vascular imaging should not be delayed if arterial dissection or AVF is suspected 5

3. Do not assume bilateral symptoms rule out serious pathology - The combination of pulsatile tinnitus on one side with other symptoms on the contralateral side can occur with intracranial hypertension or bilateral vascular involvement

4. Do not order MRI without vascular sequences - Standard brain MRI without MRA/MRV is insufficient for pulsatile tinnitus evaluation 6, 7

Time-Sensitive Conditions to Rule Out

Approximately 6.5% of pulsatile tinnitus cases have time-sensitive findings requiring urgent intervention 8:

• Arterial dissection (can progress to stroke) 5
• Dural arteriovenous fistula (risk of hemorrhage)
• Severe carotid stenosis
• Vascular malformations

Management Pending Imaging

• Avoid anticoagulation until vascular imaging excludes hemorrhagic lesion
• Blood pressure control if hypertensive
• Avoid Valsalva maneuvers
• Urgent neurology or neuro-interventional consultation if imaging reveals vascular pathology

Prognosis and Treatment Implications

If vascular etiology identified: Many are treatable with endovascular intervention, surgical repair, or medical management (e.g., venous sinus stenting for intracranial hypertension) 2, 9

If imaging negative: Consider referral to specialized tinnitus clinic, but only after dangerous etiologies excluded 1

The acute presentation with multiple concerning features makes this a medical urgency requiring same-day or next-day imaging, not a routine outpatient workup.