Psoriasis is best described as:

Explanation: The Auspitz sign refers to the appearance of tiny bleeding points when the scales on psoriatic plaques are removed or scraped. This sign is a characteristic feature of psoriasis and helps differentiate it from other skin conditions.

Incorrect choices: a. Moist, oozing skin lesions: Moist, oozing lesions are not typical of psoriasis. Psoriasis plaques are dry and scaly in nature.

b. Dark, hyperpigmented patches: Hyperpigmentation is not a characteristic feature of psoriasis. Psoriatic plaques are typically erythematous (red) with silvery-white scales.

d. Translucent, fluid-filled blisters: Translucent, fluid-filled blisters are not typically associated with psoriasis. This description is more consistent with a condition called pemphigus, not psoriasis.

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.