Hi sir I am Indian citizen currently in UAE....

How to treat acne and acne scars

you can use  tretinoin  cream which will help improving the acne and removing the acne scar and this drug should not be used in pregnancy  and of no improvement occurs then you can use other methods like cortisone local injection to remove the scars or chemical peeling using lactic acid and you can use Dermabrasion where the dermatologist remove the sufrace layer of the skin to remove the scars and laser can also be used

How to diagnose acne

in case of severe acne then you should be assessed by the physician to exclude the presence of diseases like cushing syndrome by doing dexamethasone suppression test and you should excluse the presence of polycystic ovary syndrome in the women by doing abdominal ultrasound

what are the causes of acne

oily skin
cushing syndrome
polycystic ovary syndrome

advice

you should follow up with the physician to do the lab test and provide the treatment