Hi, If I were your treating Doctor for this case of Psoriasis, I would come up with three possibilities, these include: 1.Topical creams, lotions, and ointments applied directly to affected areas. These include moisturizers, corticosteroids(betamethasone) and vitamin D creams, and shampoos made with salicylic acid or coal tar. 2.Light therapy (phototherapy) uses ultraviolet light to treat the psoriasis symptoms. I usually recommend brief daily exposure to the sun,visiting of sea beach, but too much sunlight can make psoriasis worse. In severe cases you can try laser therapy. 3.Oral or injected medications are used to treat severe psoriasis or psoriasis that resists other treatments. They include pills, shots, and medicines given intravenously (Calcium gluconate and others). I suggest you to consult a dermatologist. Psoriasis is not genetic disease. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions. Wishing your nephew good health.