Tropical Medicine and Infectious Diseases

Immunology of Infections

Clinical Immunology associated with studies of diseases which are caused due to disorders of immune system i.e.., abnormal growth of any cellular tissues of the system, hypersensitivities such as in asthma , immune system failure and other allergies. It also includes the diseases of other systems, where immune reaction plays a vital role in the clinical aspects and pathology. Clinical Immunology divided into two categories: autoimmunity host body own itself attacks the immune system in the other hand Immunodeficiency is a category in which inadequate response is attained by the immune system.

An allergic disease occurs when a person's immune system reacts to substances present in the environment that are harmless for most people. These substances are known as allergens and are found in dust mites, foods, pets, ticks, pollen, insects, moulds, and some medicines.