Good afternoon, My name is Garth Sambrano and I have some rashes in my head that look terrible. went and saw dermatologist last week and she took a sample and did a couture. She thinks I may be suffering from seborrheic dermatitis and recommended a prescribed shampoo for me to use plus Cordran lotion. My problem is the lotion is very expensive for me to buy and wondered is there something cheaper or genetic I can get that does the same job but not at the cost? The rashes I have are scally and white and it makes me feel uncomfortable with myself