Which of the following skin changes is a hallmark of chronic psoriasis?

Explanation: Environmental factors such as stress, trauma, infections, and certain medications are considered triggers that can worsen psoriasis symptoms in individuals who are already genetically predisposed to the condition. These triggers can lead to psoriasis flare-ups or worsen existing plaques.

Incorrect choices: a. Primary cause of psoriasis: Environmental factors are not the primary cause of psoriasis. While they can influence the severity of symptoms, the condition itself is primarily driven by genetic factors and immune system dysfunction.

b. Minor role with no significant impact: Environmental triggers are not minor in psoriasis etiology. They can have a significant impact on symptom severity and recurrence in susceptible individuals.

d. Protective factors against developing psoriasis: Environmental factors are not protective against developing psoriasis. As an autoimmune condition, psoriasis is primarily influenced by genetic predisposition and immune system dysfunction, not by protective environmental factors.

Explanation: While sunlight can improve psoriasis symptoms in some individuals, direct exposure for extended periods can lead to skin damage and increase the risk of skin cancer. Sunscreen and limited sun exposure are advised.

Incorrect choices: b. "Applying emollients or moisturizers regularly." - Regular application of emollients or moisturizers is important for keeping the skin hydrated and preventing dryness and irritation, which can exacerbate psoriasis.

c. "Engaging in outdoor physical activities." - Engaging in light physical activities is generally encouraged, as long as it does not worsen psoriasis symptoms.

d. "Frequent application of alcohol-based hand sanitizers." - Alcohol-based hand sanitizers can dry out the skin and may irritate psoriasis lesions. It is better to use gentle, non-irritating handwashing techniques.

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