Hi.. As you said you suffer from psoriasis.Psoriasis is a chronic relapsing and autoimmune disease. You may be having scaly plaques on various parts of the body,scaly lesions on the scalp. Exact cause is not known. Genetic tendency, autoimmunitity,stress,dry wheather...etc may be responsible for precipitation and exacerbation of the disease. You consult dermatologist for firm diagnosis and treatment. There are different modalities for the control of psoriasis. Relapses may be prevented by regular and proper treatment. I usually recommend cap acitretin 10 mg twice a day along with methotraxate 15 mg weekly in three devided doses 12 hourly. If there is itching, you may take antihistaminics like levocetirizine. Treatment may be taken for long time till good response. Blood tests may be done to monitor the treatment. You may apply mild steroid cream, combined oint of steroid and salicylic acid or calcipotriol oint on the lesions. You may apply moisturiser to improve the skin texture. Avoid soap bath for few weeks.. You should avoid stress and worries as that might worsen psoriasis. You might get good result after few months regular treatment. Have patience and avoid tension.I hope you got my answer. Thanks. Dr. Ilyas Patel MD