From around 3.5 yrs my face has uneven skin tone...the area under T-zone appears darker than other part. There are extremely dark scars on both sides of face. The scars increased last yr while i got exposed to sun for prolonged time. Even on my nose there is a dark line. I'm alergic to dust...had to use asthma pump once 3 yr back, but with few simple precautions that is under control. Never had any other medical prblm.