Hi there. You did say you have met 7 dermatologists'..am surprised you still count :) We are not a very large group in the medical fraternity but am sorry we have not been of mch help thus far...am sure they will have tried. Your problem my dear will require a more in-depth assessment. First, one needs to know the 'depth' of your pigmentation..superficial, epidermal or deeper dermal? A wood's lamp examination will be useful to help out or a dermascope or nowadays, facial scanners with IR etc give you a 'map' of your face. Next, underlying hormonal
or endocrine causes need to be ruled out. Then accordingly a treatment regime needs to be started that varies from creams to lasers depending on your case. You may check our portal for a 'different' dermatologist in your area using our healthcaremagic website doctors addresses or use our 'ask-a-doctor' premium service & get in touch with me with details & photographic evidences. Chers & Good Luck!
Dr Praveen Rodrigues MD