Muckle–Wells syndrome (MWS), is a rare autosomal dominant disease which causes sensorineural deafness, recurrent hives, and can lead to amyloidosis. Individuals with MWS often have episodic fever, chills, and painful joints. As a result, MWS is considered a type of periodic fever syndrome. MWS is caused by a defect in the CIAS1 gene which creates the protein cryopyrin. MWS is closely related to two other syndromes, familial cold urticaria and neonatal onset multisystem inflammatory disease — in fact, all three are related to mutations in the same gene and subsumed under the term cryopyrin-associated periodic syndromes (CAPS).
Muckle-Wells Syndrome is a disorder that is caused by mutations in the CIAS1 gene. It is normally characterized by skin rash, joint pain and fever. The syndrome is inherited and has a chance of 50% in parents that can be carriers. See http://ghr.nlm.nih.gov/condition/muckle-wells-syndrome for details.