Are there treatment for psoriasis ?

Yes: There are several treatments for psoriasis, depending on it's severity and other symptoms. But there is no cure. Treatment has to be continued and the condition will come back when treatment terminated or worsen with stress.

Yes: There are effective treatments for psoriasis. See your doctor.

There are many...: ...From topical steroids to vitamin d derivatives to ultraviolet light to methotrexate, cyclosporine, the biologic drugs, and many other options. A lot depends on severity, the areas involved, and how you feel about it. See a dermatologist and get a good evaluation and treatment plan tailored to your specific needs.