Elevated DHEA sulfate without obvious cause with diffuse hair loss!

28 female with diffuse hair loss for long period , not in stress , blood test shows mild deficiency of iron stores (ferritin) with normal hemoglobin, mild zinc deficiency, mild low of HDL . elevated DHEA sulfate (from adrenal) with mild elevation in total testosterone and normal DHT level, low dexamethasone test shows no adrenal hyperplasia or cushing disease , normal U/S no ovarian cyst ,normal FSH , LH , regular cycle ,normal BMI , on vitamins supplements with healthy diet but no improvement