Yaz may refer to:

People
Yazmith Bataz (born 1972), Mexican sprinter
Yaz Mubarakai (born 1975), Australian politician
Carl Yastrzemski (born 1939), American Hall-of-Fame baseball player
Mike Yastrzemski (born 1990), American professional baseball player, grandson of Carl

Other uses
Yaz culture, an early Iron Age culture of Bactria and Margiana, c. 1500-1100 BC
Yaz-class river patrol craft, Russian Coast Guard vessels
YAZ, IATA code for Tofino Airport in Tofino, British Columbia, Canada
yaz, ISO 639-3 code for the Yakö language, spoken by the Yakö people of Nigeria
Yaz (band) or  Yazoo, an English synth-pop band
Yaz Pistachio, a female character from the comic strip Bloom County
Yaz (drug), a brand name for a birth control pill containing drospirenone that may also be used for other indications
YAZ, a programmer toolkit for development of Z39.50 clients and servers

See also
Yazz (born 1960), pseudonym used by English singer Yasmin Evans
Yazz The Greatest, a stage name of American actor and rapper Bryshere Y. Gray
Involvement of the kidney often indicates a worse prognosis, with a 10-year survival rate of 30%. The most common histopathologic finding is mild mesangial proliferation, that is followed by focal and segmental necrotizing glomerulonephritis with crescents. Other abnormalities that are found include glomerulosclerosis, IgA nephropathy and interstitial nephritis. Immunofluorescence studies most often reveal faint deposits of C3, IgG or IgM in the primarily mesangium. Constitutional symptoms
These symptoms could consist of asthenia, fever, anorexia, and weight loss. They mostly occur during a severe disease flare. Others
Skin and mucous membranes: 20 to 30% of people with relapsing polychondritis have skin involvement, including aphthous ulcers, genital ulcers, and a number of non-specific skin rashes including erythema nodosum, livedo reticularis, hives, and erythema multiforme. Cardiovascular system: Relapsing polychrondritis may cause inflammation of the aorta. It can also cause leaky heart valves (aortic valve regurgitation in 4 to 10%, mitral valve regurgitation in 2%). Causes
Relapsing polychondritis is an autoimmune disease in which the bodys immune system begins to attack and destroy the cartilage tissues in the body. It has been postulated that both cell-mediated immunity and humoral immunity are responsible.Reasons for disease onset are not known, but there is no evidence of a genetic predisposition to developing relapsing polychondritis. However, there are cases where multiple members of the same family have been diagnosed with this illness. Studies indicate that some genetic contribution to susceptibility is likely. Diagnosis
There is no specific test for relapsing polychondritis.