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Bardet-Biedl Syndrome (BBS): Understanding Its Unique Facial Features


April 10, 2024


Bardet-Biedl syndrome, often referred to as BBS, is a rare genetic condition with distinct characteristics, including specific facial features. Understanding these features can be crucial for early diagnosis and management of Bardet-Biedl syndrome. In this blog, we’ll describe the facial characteristics of BBS, aiming to spread awareness about this unique syndrome.

What is Bardet-Biedl Syndrome?

Bardet-Biedl syndrome, sometimes known as Bardet syndrome or BBS disease, is a rare genetic disorder. It affects many parts of the body, and can impact facial appearance. Recognizing Bardet-Biedl features early can help in diagnosing Bardet-Biedl syndrome symptoms more effectively.

Key Facial Features of Bardet-Biedl Syndrome

While BBS can present differently in each individual, there are some common facial features associated with this condition:

Deep-set Eyes:

One of the notable Bardet-Biedl syndrome facial features includes eyes that appear more sunken or deep-set. This is often one of the first signs noticed in individuals with BBS.

Widely Spaced Eyes:

Bardet-Biedl syndrome may cause the eyes to be more widely spaced than usual. This distinctive spacing can be an indicator of the syndrome.

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Flat Nasal Bridge:

Many individuals with BBS have a flatter nasal bridge. This is where the nose and forehead meet, and in BBS, this area can appear less pronounced.

Prominent Forehead:

A prominent or more pronounced forehead is another common feature in BBS patients. This can give the face a unique shape and appearance.

Small Jawline or Chin:

A smaller jawline or chin is also observed in some individuals with Bardet-Biedl syndrome. This can affect the overall symmetry and proportions of the face.

The Importance of Recognizing Bardet-Biedl Syndrome

Early recognition of Bardet-Biedl syndrome is crucial because BBS can affect other parts of the body, including vision, kidney function, and weight. Obesity is a significant aspect of Bardet-Biedl syndrome, impacting the health and well-being of individuals affected by this genetic disease. Targeting the underlying mechanisms and implementing appropriate interventions can help individuals with obesity due to BBS to manage their weight. Awareness of Bardet-Biedl syndrome symptoms, including its facial characteristics, can lead to earlier intervention and better management of the condition.


Bardet-Biedl syndrome, or BBS, is a rare genetic condition with distinct facial features. Recognizing these features, such as deep-set eyes, widely spaced eyes, a flat nasal bridge, a prominent forehead, and a small jawline, is vital for early diagnosis and management. By understanding and spreading awareness about Bardet-Biedl syndrome and its symptoms, we can support those affected and contribute to better health outcomes.

Remember, if you notice these facial features in yourself or someone you know, it’s important to consult a healthcare professional for a proper evaluation.


This blog post was developed by Ambit on behalf of Rhythm Pharmaceuticals, Inc.

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You are not alone. A community and a treatment for obesity in individuals living with BBS are out there – find out more today.

The majority of individuals living with BBS experience intense, hard-to-control hunger contributing to obesity. There is an approved treatment that significantly reduced measures of weight and hunger in clinical trials in people living with BBS. Take the questionnaire to connect to educational resources.

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Please note that AmbitCare provides this information for the benefit of the rare disease community. AmbitCare is not a medical provider nor a health care facility. AmbitCare can neither diagnose any disease or disorder nor endorse or recommend any specific medical treatments. Individuals must rely on the personal and individualized medical advice of their qualified health care professionals before seeking any information related to their particular diagnosis, cure, or treatment of a condition or disorder.