AIDS: HIV/AIDS is a serious immune failure and a leading cause of death worldwide. AIDS occurs in the later stages of progression of HIV and causes the immune system of the body to collapse completely. AIDS is considered as a life threatening sexually transmitted disease, though can be transmitted through the means of blood transfusion as well. Chances of survival in AIDS patients are negligible, if diagnosed in later stages. Immune system disorders symptoms for AIDS range from common cold and flu to serious ones like pneumonia and cancer. [pic]
Diabetes is a disease that affects the body's ability to make and use insulin and can result in blindness, heart disease, neurological disease, kidney failure and other conditions. Forms of diabetes can result from immune system diseases because of an immune system attacking molecules and self cells. [pic]

Asthma: Asthma, a chronic lung disorder, is caused due to inflammation of the air passage. Allergens, irritants or even stimulants such as physical activity can trigger the inflammation and induce variety of discomforts in a person. The symptoms of asthma include wheezing, coughing, shortness of breath, chest tightness, etc. [pic]

Allergy is a hypersensitivity disorder of the immune system.[1] Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are acquired, predictable, and rapid. Strictly, allergy is one of four forms of hypersensitivity and is called type I (or immediate) hypersensitivity. It is characterized by excessive activation of certain white blood cells called mast cells and basophils by a type of antibody known as Immunoglobulin E, resulting in an extreme