The nurse is assessing a patient with suspected psoriasis. What is the primary assessment technique used to diagnose psoriasis?
Skin biopsy.
Blood test.
Physical examination.
Magnetic resonance imaging (MRI).
The Correct Answer is C
Explanation: The primary assessment technique used to diagnose psoriasis is a physical examination of the skin. The characteristic red, raised patches with silver scales are indicative of psoriasis. While additional tests like skin biopsy may be used to confirm the diagnosis, the initial diagnosis is based on the visual appearance of the skin lesions.
Incorrect choices: a. A skin biopsy may be performed to confirm the diagnosis of psoriasis, but it is not the primary assessment technique used to diagnose the condition.
b. Blood tests may be conducted to rule out other conditions or assess for systemic involvement, but they are not the primary method of diagnosing psoriasis.
d. MRI is not a diagnostic tool for psoriasis. It may be used in certain cases to assess joint involvement in psoriatic arthritis, but it does not diagnose psoriasis itself.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Explanation: Genetic predisposition in psoriasis contributes to the development of the condition by causing abnormal functioning of the immune system. Certain genes involved in the immune response are associated with psoriasis, leading to an overactive immune system that triggers inflammation and skin cell overproduction.
Incorrect choices: a. Genetic factors increase skin sensitivity to environmental irritants: While some environmental triggers can worsen psoriasis symptoms, genetic predisposition primarily influences the immune system's response, not skin sensitivity to irritants.
b. Genetic factors cause an allergic reaction to certain foods: Psoriasis is not primarily an allergic reaction, and genetic factors do not cause allergic reactions to specific foods in this context.
d. Genetic factors impair the skin's barrier function: Psoriasis is not caused by a skin barrier dysfunction. The condition is characterized by immune system dysregulation and the subsequent inflammation and rapid skin cell turnover.
Correct Answer is B
Explanation
Explanation: A definitive diagnosis of psoriasis is often made through a skin biopsy, where a small sample of the affected skin is taken and examined under a microscope to confirm the presence of psoriasis-related changes.
Incorrect choices: a. Blood tests are not used to diagnose psoriasis, as it is not caused by a bacterial infection.
c. Chest X-rays are not part of the diagnostic process for psoriasis, as it primarily affects the skin and not the lungs.
d. Urinalysis is not used to diagnose psoriasis, as it does not provide relevant information about the skin condition.
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