Which of the following statements is true regarding the distribution of psoriasis lesions on the body?

Explanation: Psoriasis is believed to have a genetic component, and it is considered an autoimmune disorder where the immune system mistakenly attacks healthy skin cells, leading to the characteristic skin changes.

Incorrect choices: a. Poor hygiene and lack of skin care - Psoriasis is not caused by poor hygiene or lack of skin care.

b. Exposure to environmental toxins - While environmental factors may trigger or worsen psoriasis in some individuals, they are not the primary cause of the condition.

d. Excessive sun exposure - Sun exposure may improve psoriasis symptoms in some people, but it is not the underlying cause of the condition.

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.