Which of the following is not a common symptom of immunodeficiency disorders?

Explanation: The correct answer is c. Primary immunodeficiency disorders are typically present at birth or during early childhood and are caused by genetic defects that affect the function of the immune system. They are not acquired later in life due to environmental factors.

Incorrect choices:

a. Primary immunodeficiency disorders are not acquired later in life; they are usually genetic and present from birth.

b. Primary immunodeficiency disorders are characterized by a weakened or deficient immune response, not an overactive immune response.

d. Primary immunodeficiency disorders are often not easily treatable with antibiotics and antiviral medications because they result from genetic defects in the immune system.

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.