Which of the following is a primary immunodeficiency disorder?
Human immunodeficiency virus (HIV) infection
Common variable immunodeficiency (CVID)
Rheumatoid arthritis
Diabetes mellitus
The Correct Answer is B
Explanation: The correct answer is b. Common variable immunodeficiency (CVID). CVID is an example of a primary immunodeficiency disorder, which is typically caused by genetic mutations affecting the immune system's development and function.
Incorrect choices:
a. Human immunodeficiency virus (HIV) infection is an example of a secondary immunodeficiency disorder, which occurs due to an external factor, such as a viral infection, damaging the immune system.
c. Rheumatoid arthritis is an autoimmune disorder that affects the joints and is not classified as an immunodeficiency disorder.
d. Diabetes mellitus is a metabolic disorder involving insulin production and does not directly affect the immune system's function.
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Correct Answer is C
Explanation
Explanation: The correct answer is c. Autoimmune diseases are a potential complication of primary immunodeficiency disorders. When the immune system is deficient or dysfunctional, it may fail to distinguish between self and non-self antigens, leading to the development of autoimmune diseases.
Incorrect choices:
a. Hypertension is a condition characterized by high blood pressure and is not directly related to primary immunodeficiency disorders.
b. Chronic fatigue syndrome is a complex disorder with unknown causes and is not directly related to primary immunodeficiency disorders.
d. Diabetes mellitus is a metabolic disorder caused by insufficient insulin production or insulin resistance and is not directly related to primary immunodeficiency disorders.
Correct Answer is B
Explanation
Explanation: The correct answer is b. Primary immunodeficiency disorders result from a genetic or inherited defect, while secondary immunodeficiency disorders are caused by external factors, such as infections or medications.
Incorrect choices:
a. Primary immunodeficiency disorders are present from birth and are usually genetic or inherited, while secondary immunodeficiency disorders can be acquired later in life due to external factors.
c. The manifestations and systems affected by primary and secondary immunodeficiency disorders can vary widely and are not limited to specific areas of the body.
d. Secondary immunodeficiency disorders are more common than primary immunodeficiency disorders, as they can be caused by various factors and are often associated with other medical conditions.
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