What is the primary factor contributing to the development of psoriasis?
Genetic predisposition and family history.
Exposure to harsh chemicals and irritants.
Bacterial infection of the skin.
Excessive sun exposure.
The Correct Answer is A
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.
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Related Questions
Correct Answer is C
Explanation
Explanation: Phototherapy involves exposing the skin to UV light to treat psoriasis. During phototherapy sessions, patients should wear special shields to protect their eyes and genitals from potential UV damage.
Incorrect choices: a. Patients undergoing phototherapy are actually exposed to controlled amounts of UV light, which is different from uncontrolled sun exposure. Phototherapy is a prescribed treatment and should be done under healthcare professional supervision.
b. While phototherapy may cause temporary skin darkening or tanning, it is not associated with permanent changes in skin color.
d. Phototherapy does not increase the risk of skin infections. However, patients with psoriasis should practice good hygiene to prevent infections related to their condition and skin care routine.
Correct Answer is D
Explanation
Explanation: Psoriasis lesions commonly appear in a symmetrical pattern, affecting similar areas on both sides of the body. For example, if a plaque is present on the right elbow, there is a high likelihood of a corresponding plaque on the left elbow.
Incorrect choices: a. Psoriasis lesions are evenly distributed across the body: Psoriasis lesions are not evenly distributed and tend to cluster in certain areas, such as elbows, knees, scalp, and lower back.
b. Psoriasis lesions are typically limited to the face and neck: While psoriasis can occur on the face and neck, it is more commonly found on extensor surfaces (elbows and knees) and the scalp.
c. Psoriasis lesions are more commonly found on the left side of the body: There is no evidence to support a preference for the left side of the body in psoriasis distribution. The symmetrical pattern is a more characteristic feature.
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