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Which statement accurately defines psoriasis?

A.

Psoriasis is an autoimmune disease that primarily affects the respiratory system.

B.

Psoriasis is a bacterial skin infection caused by Streptococcus bacteria.

C.

Psoriasis is a chronic inflammatory skin condition characterized by red, scaly patches.

D.

Psoriasis is a type of skin cancer that arises from melanocytes.

Answer and Explanation

The Correct Answer is C

Explanation: Psoriasis is a chronic skin disorder that results from an overactive immune response, leading to the rapid growth of skin cells. This causes red, raised, and scaly patches to form on the skin, which can be itchy and painful.

Incorrect choices: a. Psoriasis is not primarily an autoimmune disease affecting the respiratory system. It is primarily a skin condition, although it may be associated with certain autoimmune factors.

b. Psoriasis is not caused by a bacterial infection. It is a non-infectious skin disorder with an underlying immune-mediated mechanism.

d. Psoriasis is not a type of skin cancer. It is a benign skin condition that does not involve the malignant transformation of melanocytes.


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Related Questions

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.

Correct Answer is C

Explanation

Explanation: Psoriasis commonly presents as red, scaly, and thickened patches on the skin. These patches can be itchy, painful, and sometimes crack and bleed.

Incorrect choices: a. Smooth and pink patches on the skin - This is not characteristic of psoriasis, which typically involves scaling and thickening of the skin.

b. Flaky, white patches on the skin - This is not typical of psoriasis; the patches are usually red and scaly.

d. Raised, flesh-colored bumps on the skin - This description does not match the typical appearance of psoriasis patches.

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