Hello,
From the symptoms that you have described, I would like to rule out the possibility of vitiligo. It is a pigmentation disorder in which melanocytes (the cells that make pigment) in the skin are destroyed.The exact cause is not known but a genetic or hereditary predisposition has been seen.
Diagnosis can be confirmed by external examination, blood tests to check skin cell count for melanocytes and biopsy of the skin patches. Please get the diagnosis confirmed when you visit our dermatologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Oh.. and I added a picture of the "rash" in question under my photos. thanks again