This is not exactly my forte, as I have dry skin and am not a doctor, but I will try to at least steer you in a direction.
The first, obvious, question is have you seen any sort of doctor for this? If so, what did he/she say? Have they ruled out all metabolic causes? There are a few, and I would be remiss to not encourage you to begin at your MD, as some of the causes have very real potential to lead to long term problems with your overall heath, rather than just skin issues.
Assuming that you have seen an MD, I would like to know what you have tried thus far. Have you ever tried true soaps, or are you just using stuff from the store? True soap has different qualities than the synthetic detergents available at most stores.
