Knowing what your acne is caused by is the first step to finding an effective solution. Diet, environment and hormonal changes can all trigger acne so you should certainly ask your dermatologist to help you narrow down the cause. There are several different reasons that could be the cause of your acne such as diet, hormonal changes and environment. Speaking to your dermatologist about what your acne will help you narrow down its possible causes. Once you know why it’s caused, you can make the necessary changes or have specific treatments that can clear the acne up.