Psoriasis is a chronic skin condition. The symptoms are dry flaky skin on different body parts, commonly on knees, scalp and elbow area, skin redness, itching or burning skin, skin blisters and bumps. This disease is considered a chronic and incurable one. The degree of inflammation varies. It is not unusual for psoriasis to spontaneously clear for years and stay in remission. Many people note a worsening of their symptoms in the colder winter months.