Q I am in my 50s and live in Songnimdo, Dong-gu, Incheon. When scales build up thickly I keep picking at them, and after that the area seems to spread more. Does scratching worsen psoriasis?
A Psoriasis has the Koebner phenomenon where new lesions form along sites of skin injury or irritation, so the habit of forcibly picking or scratching scales is a direct aggravating factor that widens lesions. Even if thick scales feel uncomfortable, do not pick them off—manage them gently with moisturization and minimize skin irritation. Physical irritation from rough clothing or scrubbing should also be avoided for the same reason.
Detailed Answer
One of the most commonly overlooked aggravating factors is scratching and picking. Psoriasis has the Koebner phenomenon where new lesions form along sites of injury or irritation, so forcibly removing thick scales actually widens the area. Do not remove scales by force; leave them to fall off naturally with sufficient moisturization, and also reduce physical irritation such as scrubbing and rough friction.
Korean Medicine Clinic Perspective
Dongjedang well understands the suffering of "I know I shouldn't scratch but I can't stop." Therefore, rather than just telling patients to endure with willpower, we directly calm the root of the itching—blood-heat and heat-toxin—through heat-clearing and detoxifying, reducing the urge to scratch itself. When the heat cools from within, skin irritation naturally diminishes, making it easier to escape the vicious cycle of the Koebner phenomenon.
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