Saudi-Arabia. 1  With the exception of the province of Asir on the western coast, Saudi Arabia has a desert climate characterized by extreme heat during the day, an abrupt drop in temperature at night, and very low annual rainfall. Because of the influence of a subtropical high-pressure system, there is considerable variation in temperature and humidity.
However, some people who have IgA deficiency experience recurrent respiratory tract infections, asthma, sinus infections, allergies and diarrhea. Selective IgA deficiency may also be found with autoimmune disease, in which your immune system attacks particular organs or tissues in your own body. Common autoimmune conditions found with IgA deficiency include rheumatoid arthritis, lupus and celiac disease.
Article excerpts about the causes of Selective IgA Deficiency: IgA deficiency is caused by faulty white blood cells called B cells or B lymphocytes. While patients have normal numbers of B cells, these cells do not mature into normal IgA-producing cells. Scientists do not yet know the exact cause or causes for these immature B cells.