Psoriasis vulgaris is the problem basically related to the immune system. Psoriasis vulgaris is a long term chronic condition of skin that is caused by over active immune system. In psoriasis skin cells grows faster that result in white, thick, red or silvery patches of the skin. New skin cells grow rapidly in days rather than in weeks. In few cases psoriasis runs in the family. The symptoms include inflammation, flaking of skin commonly appearing on knees, scalp, elbow, feet, hand or lower back. Keeping healthy weight can manage psoriasis. Eliminating alcohol and cutting down the consumption of refined sugar can help to improve psoriasis.