What Questions Should I Ask a Neurologist About CADASIL?

Finding a neurologist who understands CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy) is an important step in managing your care. Because CADASIL is a rare disease, many general neurologists may only see a few cases in their career. You can evaluate a neurologist’s experience by asking targeted questions about their approach to blood pressure monitoring, stroke prevention, migraine management, and genetic test interpretation.

Understanding Your CADASIL Care Needs

CADASIL is a genetic disorder caused by mutations in the NOTCH3 gene, which leads to vessel-wall degeneration in small cerebral arteries and subsequent white-matter injury in the brain ^[1]. While there is no proven disease-modifying cure, care involves much more than just treating isolated symptoms. Comprehensive management includes addressing conventional vascular risks (like smoking, diabetes, and cholesterol), coordinating physical rehabilitation, and supporting cognitive and mood health ^[2][3].

Because of these complexities, a local neurologist can often manage your ongoing care, but consulting with a specialized neurogenetics center or a stroke neurologist with expertise in rare monogenic small-vessel diseases can be very helpful ^[4][1]. They can assist with uncertain genetic results, difficult medication decisions, and family counseling while coordinating with your local doctor.

Urgent Stroke Symptoms

Because CADASIL increases the risk of stroke, and migraine aura can sometimes overlap with stroke symptoms, you need a clear emergency plan. Seek emergency medical help immediately—do not wait for a specialist appointment—if you or a loved one experience:

• Sudden facial droop, weakness, or numbness
• Sudden trouble speaking or understanding speech
• Sudden vision loss or changes
• Severe, unexplained loss of balance or coordination
• A new, unusually severe headache

Questions to Ask a New Neurologist

1. “How do you evaluate and monitor CADASIL on an MRI?”

Why you should ask this: A doctor familiar with the condition will know that classic MRI findings include changes in the anterior temporal poles and external capsule, though these are not present in every patient ^[5]. They will also understand how to use susceptibility-sensitive MRI sequences to identify cerebral microbleeds (tiny areas of past bleeding in the brain) ^[6]. An experienced neurologist will interpret these scans in the context of your symptoms and history to guide individualized treatment, rather than relying on a rigid, fixed scanning schedule.

2. “How do you approach antiplatelet and anticoagulant medications for stroke prevention?”

Why you should ask this: CADASIL involves ischemic strokes (caused by damage or blockage in small brain arteries) as well as a risk for brain bleeds ^[4][7]. There is no universal daily antiplatelet (like aspirin) regimen for asymptomatic CADASIL patients. Furthermore, anticoagulants (stronger blood thinners used for other conditions like atrial fibrillation) carry different bleeding profiles. An experienced neurologist will carefully weigh the potential benefits of these medications against your personal microbleed burden and overall health ^[8][6]. You should never start or stop these medications without consulting your doctor.

3. “What is my individualized blood pressure target?”

Why you should ask this: Careful blood pressure control is a cornerstone of CADASIL management ^[2]. High blood pressure is strongly associated with an increased risk of intracerebral hemorrhage, and some observational studies suggest this risk may be especially relevant for patients with specific NOTCH3 variants, such as the R544C mutation ^[7][9]. However, there is no single “CADASIL-specific” blood pressure number. Your doctor should set an individualized target based on standard hypertension guidelines, your kidney and cardiovascular health, and your specific symptoms ^[4].

4. “How will we weigh the risks and benefits of migraine treatments?”

Why you should ask this: Migraines, often with aura, are a common feature of CADASIL ^[1]. Standard treatments often include triptans or other vasoconstrictive medications (drugs that narrow blood vessels). Because CADASIL affects brain blood vessels, the use of triptans requires a careful, individualized risk-benefit discussion; they are not universally banned, but caution is advised ^[10]. Alternatives, such as CGRP inhibitors, have shown promise in small case reports, but they also lack robust, long-term safety data in CADASIL ^[11]. An experienced specialist will discuss these uncertainties and help you build a personalized migraine plan.

The Role of Genetic Counseling

If you have questions about your genetic test results, a neurogenetics center can be invaluable. For instance, they can help interpret a Variant of Uncertain Significance (VUS). A VUS means a genetic change was found, but it is not definitively clear if it causes the disease. A VUS should not be used as proof of CADASIL or to make medical decisions on its own ^[12].

Furthermore, if a clearly pathogenic (disease-causing) NOTCH3 mutation is confirmed, genetic counselors can discuss cascade testing for your adult relatives ^[13]. Because CADASIL is inherited in an autosomal dominant pattern, each child of an affected parent has a 50% chance of inheriting the mutation, though symptoms and onset age can vary ^[14]. Counseling ensures families understand the medical, emotional, and insurance implications before making family-testing decisions.