If you have psoriasis, then you are likely immersed in therapy to treat it. That may include medication, ointments, or light therapy. However, what’s on your plate can also have a significant impact on the severity of your outbreaks. Psoriasis is an autoimmune disease that is also a hereditary condition. It can be triggered by a wide variety of factors, including stress, surgery, and overall health. While the root cause for psoriasis is still mostly unknown, it is possible to manage symptoms of psoriasis at home.