I understand that this may be very discomforting. I can not access the image yet.
Your physician may be considering an allergic skin reaction here. I would also consider an allergy here since the rash appears in most parts of the body. If the rash is more localized, then I would be thinking of a contact dermatitis. But for a more systemic rash, allergic reactions and even infections have to be ruled out.
It is necessary to determine any circumstance or activities surrounding the onset of the rash. Exposure to heat, smoke, pets, travel or camping outdoors may be significant.
Hope now you have seen the image, as I can't understoos what you r mean to say, please tell me briefly, and help me.