免疫性疾病种类很多。外源性抗原入体后,免疫反应增高所致的病理损伤,常称为变态反应,也叫超敏感性;内源性抗原所致的免疫损伤,称为自身免疫。另外,抗原入体不能发生一种或多种免疫反应,常为免疫缺陷。一、变态反应变态反应也称过敏反应,一般分两类:一类为抗体免疫所发生的,称速发型超敏感性反应,此类又分Ⅰ、Ⅱ、Ⅲ三型;另一 There are many types of immune diseases. Exogenous antigens into the body, the immune response caused by increased pathological damage, often called allergy, also known as hypersensitivity; endogenous antigen-induced immune damage, called autoimmunity. In addition, the antigen into the body can not occur one or more immune response, often immune deficiency. Allergic reactions Allergic reactions, also known as allergic reactions, are generally divided into two categories: one for the occurrence of antibody immunization, said rapid-onset hypersensitivity reactions, such as sub-type Ⅰ, Ⅱ, Ⅲ three; the other