This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
Buschke-Ollendorff syndrome (BOS) affects the skin and bones causing skin lesions and spots on the bones. The skin lesions are due to abnormalities in different types of connective tissue. The bone spots are painless areas of increased bone density seen on X-ray. People with BOS may have only skin, only bone or both skin and bone involvement. Rarely, BOS causes melorheostosis, which results in abnormal bone growth and can lead to bone pain and abnormally flexed joints. Symptoms of BOS usually start in childhood. The skin lesions can increase with age, but they do not cause other symptoms. BOS is caused by variations in the LEMD3
gene and is inherited in an autosomal dominant pattern. Diagnosis is based on clinical examination, imaging studies, and may be confirmed by the results of genetic testing. Treatment of BOS is focused on managing the symptoms. Many people with BOS have no symptoms or pain and do not require any treatment.
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