Have you had your thyroid checked by your doctor? My mother had those symptoms and nothing would work, either. She found out she had Hashimoto's, a disease of the thyroid where it switches between hyperthyroid (overactive thyroid) and hypothyroid (underactive thyroid). With the proper meds and exclusion of inflamatory foods from her diet (dairy, gluten product's, and processed sugars) her hair stopped falling out, scalp no longer is dry and flaky, and all around feels better. I have also learned that just hypothyroid can cause those symptoms as well. I am not a doctor, but I just thought I'd let you know about someone I love's experience with the same issue.