The department of allergy and immunology in medicine is going to deal with the immune system. Basically in allergy and immunology a doctor is trying to understand the physiological functioning of the immune system and even alter it if needed. For example those suffering from allergies may require allergy and immunology specialists to create a medication that will stop the allergy from affecting the person.
With allergy and immunology a doctor will look for hypersensitivities, deficiencies and autoimmune diseases that could affect the patient. Most often in allergy and immunology a histological examination is required to determine what is affecting a patient. The immune system is our body’s defense system, which means allergies also result as a way to defend against outside triggers that affect the body.