Type 1: Plain old allergy (asthma, anaphylaxis, atopy) Type 2: Antibody-dependent, cytotoxic (think of autoimmune hemolytic anemia) Type 3: Immune complex disease (like a lot of the autoimmune conditions: rheumatoid, lupus) Type 4: Delayed/Cell-Mediated (mediated by T cells, T cells are slower to react than antibodies, so this reaction takes a couple days) Type 5: Receptor-mediated autoimmune disease (Graves, myasthenia gravis)
Delayed type of hypersensitivity simplified Type IV or delayed type of hypersensitivity is a bit different because unlike type I & type II hypersensitivity which is mediated by antibodies, type IV is mediated by T cells. The whole response is directed by chemokines and cytokines released by antigen-stimulated Th1 cells.
Most asthma sufferers use inhalers to control their breathing. The asthma inhaler gives quick relief when finding in hard to breath and control the asthma. There are many types of inhalers and they are prescribed to asthma patients according to their diagnosis. But they all work towards controlling the asthma and preventing any serious damage from happening.
Hemolytic disease of the newborn develops when maternal IgG antibodies specific for fetal blood- group antigens cross the placenta and destroy fetal red blood cells. The consequences of such transfer can be minor, serious, or lethal. Severe hemolytic disease of the newborn, called erythroblastosis fetalis, most commonly develops when an Rh+ fetus expresses an Rh antigen on its blood cells that the Rh– mother does not express.