What is Sturge Weber Syndrome?

Sturge Weber syndrome a complexed neurological condition and is estimated to affect around 1 in 20,000 to 1 in 50,000 live births. It affects both males and females equally and does not show a preference for any ethnic or racial group.

Sturge Weber syndrome, also known as encephalotrigeminal angiomatosis, is a rare, congenital disorder characterised by the presence of a port-wine stain birthmark on the face, glaucoma, and abnormalities of the blood vessels in the brain. This syndrome is caused by a mutation in the GNAQ gene.

The main feature of Sturge Weber syndrome is a reddish or purplish birthmark, known as a port-wine stain, typically found on one side of the face. This birthmark is caused by an overabundance of capillaries in the affected area.

The condition also affects the blood vessels in the brain, leading to a range of neurological symptoms. These can include difficult to control seizures, developmental delays, intellectual disability, muscle weakness or paralysis on one side of the body, and vision problems.  It is also known to have spectrum of associated conditions (known as comorbidities) which may include Autism, ADHD, behavioural challenges and difficulties with speech and language, mobility and sleeping. 

In addition, individuals with Sturge Weber syndrome are at a higher risk of developing glaucoma, a condition characterized by increased pressure in the eye that can cause vision loss if not treated.

Treatment for Sturge Weber syndrome focuses on managing the symptoms and complications associated with the condition. This can include anti-seizure medications for seizures, glaucoma management, physical and occupational therapy, and interventions to support developmental and cognitive needs.

The Sturge Weber syndrome is estimated to affect around 1 in 20,000 to 1 in 50,000 live births. It affects both males and females equally and does not show a preference for any ethnic or racial group.

How is it usually diagnosed

The diagnosis of Sturge Weber syndrome typically involves a combination of clinical evaluation, imaging studies, and other diagnostic tests. Here’s an overview of the diagnostic process:

1. Clinical Evaluation: Physical Examination: The presence of a facial port-wine stain is often a key clinical feature, although is not always present. This birthmark usually appears on the forehead, face, or neck and is due to blood vessel abnormalities. Neurological Assessment:  A thorough neurological examination may be conducted to assess developmental milestones, cognitive function, and motor skills.

2. Imaging Studies: MRI (Magnetic Resonance Imaging):  An MRI with contrast of the brain is often performed to detect abnormalities such as leptomeningeal angiomas (abnormal blood vessels in the meninges) and structural brain anomalies. These findings can help confirm the diagnosis of Sturge Weber syndrome. CT (Computed Tomography) Scan: CT scans may also be used to visualize brain abnormalities.

3. Eye Examination: Ophthalmologic Evaluation: Since glaucoma is a common feature of Sturge Weber Syndrome, an eye examination, including measurement of intraocular pressure, is important for diagnosis and ongoing management.

4. Electroencephalogram (EEG): EEG Monitoring: An EEG may be performed to assess electrical activity in the brain. Abnormalities in the EEG may be indicative of seizures, which can occur in individuals with Sturge Weber syndrome. It’s important to note that the diagnosis of Sturge Weber syndrome is often based on a combination of clinical and imaging findings. The specific tests performed may vary based on the individual’s symptoms and medical history. If you suspect Sturge Weber syndrome or if you have concerns about a potential diagnosis, it’s crucial to consult with a healthcare professional, such as a neurologist or a paediatrician, who can conduct a thorough evaluation and order appropriate tests.