It is defined as a disorder in which there is a granulamatous arthritis, iritis as well as the skin granuloma. It is familial and autosomal dominant in nature. It has features which resemble both the sarcoidosis as well as granuloma annulare. It is rare and autosomal dominant in nature. It is in link with the NOD2. It is rare and has unknown etiology.

What are the signs and symptoms of Blau syndrome or disease?

It includes the arthritis, iritis as well as the skin granuloma.

What are the causes of Blau syndrome or disease?

It includes the genetic causes mainly.

How Blau syndrome or disease can be diagnosed?

It includes the use of visual examination only.