There's no definitive answer to this question, as different people may find that different foods help or worsen their psoriasis symptoms. However, some people with psoriasis report that apples (and other fruits high in antioxidants) help to soothe their skin. Antioxidants are thought to fight inflammation, which is a key component of psoriasis. So, if you find that apples help your psoriasis symptoms, there's no harm in continuing to eat them!