Which of the following immune system components plays a key role in the etiology of psoriasis?
T-cells
B-cells
Platelets
Eosinophils
The Correct Answer is A
Explanation: Psoriasis is an autoimmune disorder in which T-cells, a type of white blood cell, become overactive and trigger an inflammatory response. These T-cells promote the rapid growth of skin cells, leading to the characteristic plaques seen in psoriasis.
Incorrect choices: b. B-cells: While B-cells are important components of the immune system, they are not primarily involved in the etiology of psoriasis. T-cells are the central players in the autoimmune response seen in psoriasis.
c. Platelets: Platelets are primarily responsible for blood clotting and are not directly related to the development of psoriasis.
d. Eosinophils: Eosinophils are a type of white blood cell involved in immune responses against parasitic infections and allergic reactions. While they are important in certain immune processes, they are not the main players in psoriasis etiology.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Explanation: Applying topical corticosteroids to affected areas can help reduce inflammation, itching, and discomfort associated with psoriasis. However, the nurse should ensure that the patient follows the prescribed dosage and instructions for the use of corticosteroids.
Incorrect choices: b. Encouraging the patient to scratch the affected areas gently is not appropriate, as scratching can exacerbate psoriasis and lead to skin damage and infection.
c. NSAIDs are not typically used to manage itching and discomfort in psoriasis. They may be prescribed for joint pain associated with psoriatic arthritis, but they do not target the skin symptoms of psoriasis.
d. While warm baths can be soothing, frequent baths may actually dry out the skin and worsen psoriasis. Additionally, the water should be lukewarm rather than hot to avoid triggering flare-ups.
Correct Answer is C
Explanation
Explanation: Psoriasis is believed to have a genetic component, and it is considered an autoimmune disorder where the immune system mistakenly attacks healthy skin cells, leading to the characteristic skin changes.
Incorrect choices: a. Poor hygiene and lack of skin care - Psoriasis is not caused by poor hygiene or lack of skin care.
b. Exposure to environmental toxins - While environmental factors may trigger or worsen psoriasis in some individuals, they are not the primary cause of the condition.
d. Excessive sun exposure - Sun exposure may improve psoriasis symptoms in some people, but it is not the underlying cause of the condition.
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