Which type of immunodeficiency disorder is characterized by a deficiency in immunoglobulin A (Ig
a. Selective IgM deficiency
X-linked agammaglobulinemia
Common variable immunodeficiency (CVID)
Selective IgA deficiency
The Correct Answer is D
Explanation: The correct answer is d. Selective IgA deficiency. This disorder is characterized by a lack of immunoglobulin A, which can lead to an increased susceptibility to infections, particularly in the respiratory and gastrointestinal tracts.
Incorrect choices:
a. Selective IgM deficiency is a rare immunodeficiency disorder characterized by a lack of immunoglobulin M (IgM), not IgA.
b. X-linked agammaglobulinemia is a primary immunodeficiency disorder caused by a mutation in the BTK gene, resulting in a deficiency of B cells and immunoglobulins.
c. Common variable immunodeficiency (CVID) is a heterogeneous group of disorders characterized by decreased levels of immunoglobulins, including IgA, IgG, and IgM.
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Correct Answer is B
Explanation
Explanation: The correct answer is b. Persistent fever and night sweats. Fever and night sweats are common clinical manifestations of immunodeficiency disorders. The immune system's inability to fight off infections can lead to recurrent fevers and night sweats as the body tries to combat pathogens.
Incorrect choices:
a. Hyperactivity and restlessness are not typical clinical manifestations of immunodeficiency disorders. These symptoms are more commonly associated with conditions affecting the central nervous system.
c. Weight gain and increased appetite are not typical clinical manifestations of immunodeficiency disorders. They may be seen in conditions like hypothyroidism or hormonal imbalances.
d. Elevated blood pressure is not a common clinical manifestation of immunodeficiency disorders. It may be seen in conditions like hypertension or cardiovascular disorders.
Correct Answer is D
Explanation
Explanation: The correct answer is d. Immunodeficiency disorders can be caused by medications or medical treatments. Immunodeficiency disorders are conditions in which the immune system is weakened or dysfunctional, leading to an increased susceptibility to infections. They can be primary (genetic) or secondary (acquired). Secondary immunodeficiency disorders can be caused by various factors, including medications (e.g., immunosuppressive drugs used after organ transplants), medical treatments (e.g., chemotherapy for cancer), and certain diseases (e.g., HIV/AIDS).
Incorrect choices:
a. Immunodeficiency disorders are characterized by a weakened immune system, not an overactive one. Overactive immune responses are seen in autoimmune disorders.
b. Immunodeficiency disorders can be both primary (genetic) and secondary (acquired) in nature. While some immunodeficiencies are genetic, others can be acquired later in life due to various factors.
c. Immunodeficiency disorders result in a decreased ability to fight infections, not an increased one. Individuals with immunodeficiencies are more susceptible to infections and may experience recurrent or severe infections.
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