How does genetic predisposition contribute to the development of psoriasis?
Genetic factors increase skin sensitivity to environmental irritants
Genetic factors cause an allergic reaction to certain foods
Genetic factors lead to abnormal immune system functioning
Genetic factors impair the skin's barrier function
The Correct Answer is C
Explanation: Genetic predisposition in psoriasis contributes to the development of the condition by causing abnormal functioning of the immune system. Certain genes involved in the immune response are associated with psoriasis, leading to an overactive immune system that triggers inflammation and skin cell overproduction.
Incorrect choices: a. Genetic factors increase skin sensitivity to environmental irritants: While some environmental triggers can worsen psoriasis symptoms, genetic predisposition primarily influences the immune system's response, not skin sensitivity to irritants.
b. Genetic factors cause an allergic reaction to certain foods: Psoriasis is not primarily an allergic reaction, and genetic factors do not cause allergic reactions to specific foods in this context.
d. Genetic factors impair the skin's barrier function: Psoriasis is not caused by a skin barrier dysfunction. The condition is characterized by immune system dysregulation and the subsequent inflammation and rapid skin cell turnover.
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Related Questions
Correct Answer is C
Explanation
Explanation: The typical clinical manifestations of psoriasis include red, raised, and scaly patches on the skin. These patches are often itchy and may be associated with discomfort.
Incorrect choices: a. Purulent discharge is not a characteristic feature of psoriasis. Psoriasis lesions typically do not contain pus.
b. Psoriasis lesions are not smooth and painless. They are raised and may be painful or itchy.
d. Ulcerated and bleeding skin sores are not typical of psoriasis. Psoriasis lesions are characterized by dry, scaly plaques rather than open sores.
Correct Answer is C
Explanation
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.
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