Hello, You are suffering from chronic psoriasis and it is getting better as you are taking Wysolone 10 mg since 7 days. You want to know the side effects of Wysolone. The side effects are weight gain, mood changes, reduction in bone density, stomach upset and behavioral changes. You also want to know how long it can be taken. Well, there is no set limit on how long you can safely take prednisone. Taking It depends on the dose and the condition being treated. It may be prescribed by your treating doctor for a short term or a longer term. The dosage is commonly adjusted or stopped depending on your response or lack of response to the medication. Since you are showing improvement you may be given a short term treatment. To reduce side effects, your doctor will prescribe the lowest dose over the shortest time that is effective. However, if you have medical issues like poor blood circulation, diabetes and immune system problems, or problems in taking steroids you are suggested to keep your treating doctor informed. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician