I am a 72 year old female. I have had psoriasis-off and on-since I was 15 yrs. old. It was usually just on elbows and scalp but in the last few months it is spreading up my arms, on my back, on my knees, beside my nose. I feel it may soon cover my body. I have been to dermatologists and rubbed on salves and used tar shampooos. I am diabetic and wonder if that could be increasing the severity of this? Could I hear from any fellow sufferers about any successful treatment you may have had. The only time it went away was when I was having chemotherapy after a mastectomy.