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Which of the following is NOT a characteristic feature of psoriasis, aiding in its diagnosis?

D.

velopment of wheals and hives

K.

ebner phenomenon upon skin trauma

Answer and Explanation

The Correct Answer is C

Explanation: The development of wheals and hives is not characteristic of psoriasis. Wheals and hives are associated with urticaria (hives), which is a separate skin condition caused by histamine release.

Incorrect choices: a. Pitting and ridging of the nails: Pitting and ridging of the nails are common nail changes seen in psoriasis and can aid in its diagnosis.

b. Koebner phenomenon upon skin trauma: The Koebner phenomenon, where new psoriatic lesions form at sites of skin trauma or injury, is a characteristic feature of psoriasis.

d. Silvery-white scales on erythematous plaques: Silvery-white scales on erythematous (red) plaques are a classic feature of psoriasis and help differentiate it from other skin conditions.


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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: Moisturizers are beneficial in managing psoriasis symptoms as they help keep the skin hydrated and reduce dryness and itching. Avoiding moisturizers can worsen psoriasis symptoms and is not recommended.

Incorrect choices: a. Stress is a known trigger for psoriasis flare-ups, and avoiding stress can help manage the condition.

b. Limiting alcohol consumption is important as alcohol can trigger or exacerbate psoriasis symptoms.

d. Smoking is associated with increased severity and risk of psoriasis, and quitting smoking can help improve symptoms.

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