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How is psoriasis typically diagnosed?

A.

Blood test to detect the presence of Streptococcus bacteria.

B.

Biopsy of the skin lesions for histopathological examination.

C.

Chest X-ray to assess lung involvement.

D.

Urinalysis to identify inflammatory markers.

Answer and Explanation

The Correct Answer is B

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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Related Questions

Correct Answer is C

Explanation

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.

Correct Answer is C

Explanation

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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