The most common type of psoriasis, accounting for approximately 80-90% of cases, is known as:

Explanation: Moisturizing the skin is essential for managing psoriasis and preventing dryness and scaling. Regular use of moisturizers helps maintain skin hydration and reduce the discomfort associated with psoriasis.

Incorrect choices: a. Encouraging the patient to pick or scratch the affected areas can worsen psoriasis and lead to skin damage and infection.

b. Applying hot packs to the skin lesions can exacerbate psoriasis and should be avoided. Lukewarm or cool packs may provide relief for some patients.

c. A diet high in spicy and acidic foods is not recommended for psoriasis patients, as certain foods may trigger flare-ups or exacerbate symptoms. A well-balanced, anti-inflammatory diet is more appropriate for psoriasis management.

Explanation: Psoriasis has a strong genetic component, and individuals with a family history of the condition are more likely to develop it. Specific genetic factors are involved in the immune response and skin cell growth regulation, leading to psoriasis.

Incorrect choices: b. While exposure to certain chemicals and irritants can exacerbate psoriasis symptoms, they are not the primary factor contributing to its development.

c. Psoriasis is not caused by a bacterial infection. It is a non-infectious inflammatory skin disorder.

d. Sun exposure can affect psoriasis, but it is not the primary factor contributing to its development. In some cases, moderate sunlight exposure may even improve psoriasis symptoms.