Hi Doctor,I m African American and have been diagnosed with psoriasis and eczema of the skin on my trunk over the past 4 years. My dermatologist gave me hydrocortisone cream usp, 1% for the skin disorder, and it did help it when I used it. More recently, within the past year, I was getting red splotches on my neck at the sides and back. Initially they were red, but then darken to darker brown (darker than my skin). Another dermatologist recommended Luzu cream 1%, which initially seemed to help, but then more darker splotches occurred afterward. then, that dermatologist prescribed 2 Fluconazole 150mg tablets once a week. That, too, seemed to work, but then the splotches got worse. Even now the 1% Hydrocortisone cream tends to irritate the skin around my neck and turns it red like it was burnt. Another thing to know is that I only have one kidney (the other was removed 5 years ago). What should I do? Do I have a vitamin or mineral deficiency?