What dosage of ashwaganda are you taking? Ashwanganda is an amazing herb and can really energize the body but it is a bit heating especially in larger doses and can increase the fire energy in the body (this can cause acne), so I'm guessing that is what is happening in your situation. If your diet is also fire increasing (eating a lot of meat, fat, oils and hot spices) this effect can be increased. You need to take care because if your fire remains increased over a period of time, you could have a relapse of adrenal fatigue, so it would probably be best to reduce the dosage.