Change of facial tissue from medication - Is it Sunken eyes/Loss of fat/Atrophy to Eye Muscle/Temporary or Permanent? (photo)

Im writing to ask the advice regarding my eyes. I was on a prescribed medication to help me stop smoking and within 4 months my eyes became very dark, the fat or muscle seems to have been lost of weakened causing a sunken look and ridges underneath. This is becoming very difficult for me now on a daily basis I am loosing my confidence and courage to face the day. I wonder wether this is a temporary look or if I will need to see a specialist to get it fixed. Thank you for all your help.