How do corticosteroids works to treat eczema and psoriasis?

Corticosteroids work by reducing inflammation and suppressing the immune response in conditions like eczema and psoriasis. They decrease the production of inflammatory chemicals and inhibit the activity of immune cells, which helps alleviate redness, swelling, and itching associated with these skin disorders. By restoring the skin's barrier function, corticosteroids can also promote healing and prevent flare-ups. However, prolonged use may lead to side effects, so they are typically used under medical supervision.