Question

Differentiate between autoimmune disease and immunodeficiency disease.

Answer 1

Aspects	Autoimmune diseases	Immunodeficiency diseases
Cause	These diseases are caused by an overactive immune system that starts attacking the body even in the absence of a pathogen.	These diseases are caused by an insufficient immune response when the body is unable to fight a pathogen or organism.
Age	These conditions are most commonly found in middle-aged people.	The age of occurrence varies widely depending on the underlying cause of the deficiency.
Diagnosis	They are diagnosed using immune biomarkers that detect specific patterns of symptoms and clinical signs.	These are also diagnosed by identifying specific immune biomarkers and associations of symptoms.
Treatment	They are primarily treated with immunosuppressants to reduce the immune system's overactivity.	They are treated by replacing missing immune components through transfusions, vaccinations, or stem cell transplantation.