In addition to medicated shampoos, there are several other treatments that can be effective for scalp psoriasis. These include topical creams and ointments, light therapy, and oral medications. It's important to work with a dermatologist to determine the best treatment plan for your specific condition.Ketoconazole shampoo can be effective for psoriasis, as it contains antifungal and anti-inflammatory properties. However, it's important to note that ketoconazole shampoo is primarily used to treat fungal infections, and may not be the best option for all types of psoriasis.