Immunodeficiency is a set of various organism’s conditions under which functioning of immune system of the person is broken. Under such a state infectious diseases arise more often usually, last very hard and last long. By origin the immunodeficiency can be hereditary or primary and gained or secondary. At different types of an immunodeficiency infections the upper and lower airways, skin and other organs are damaged. Weight, a version and character of a disease course depends on immunodeficiency type. At immunodeficiency at the person autoimmune pathologies and allergic reactions can develop.
There are two types of immunodeficiency, they are as it was mentioned above primary and secondary. Primary immunodeficiency is a disease of immune system of hereditary character. This disease is transmitted from parents to children and remains throughout all human life. There is a set of various forms of primary immunodeficiency. According to the medical statistics the similar state is shown at one newborn on ten thousand. The part from known forms of primary immunodeficiency is shown right after the child’s birth, and other forms of an illness for many years can not be shown in general in any way. Approximately in eighty five per cent of cases the illness is diagnosed at young age (till twenty years). Primary immunodeficiency in seventy per cent of cases is diagnosed for boys as the most part of illness syndromes is directly connected with the X-chromosome.
Secondary immunodeficiency is an existence in a human body of acquired immune system diseases. Because of the weakened immunity the human body very often is attacked by various infectious diseases. AIDS is the most known example of a secondary immunodeficiency. This illness can develop as a result of radiation, medicines, various chronic diseases.