Well, if you're suffering from panic attacks that would cause an awful lot of stress which is one of the prime contributors to acne aside from diet. I believe this is where your problem lies, and prescription meds will not fix that problem, it will only control the symptoms and make your problem worse in the long run imo. Your panic attacks are coming from a deep seeded problem, perhaps from your childhood, that you may not remember. For certain the counselling will help in this regard, since I don't know the specifics of your attacks I can't really advise you, other than to say that acceptance that this is a part of you at this point in time will help some ways with the stress aspect. Your prime focus should be on finding good help for your attacks rather than worrying about the acne too much, I believe that homoeopathy can help in this regard, emotional disorders are perfectly treatable if you find yourself a good classical homoeopath.
Secondly, about your diet. You say you are consuming fruits and veg, are you eating organic foods? Do you often eat processed foods? What percentage of sugar and carbohydrates are in your diet in comparison to the fruits and veg you eat?
My panic attacks have actually been much less frequent lately. My skin is no worse, though, since I started having panic attacks. It's the same as it has been since the effects of accutane wore off.
I do eat some organic foods, but not everything I eat is organic because I am a poor grad student and cannot afford that. I do not eat processed foods. I don't eat sugar. Literally all I eat is fruit, veggies, lean meats, and whole grains like oatmeal.