you need to see your doctor for an evaluation in-person to determine what you mean by atrophy. Is it epidermal or dermal or subcutaneous atrophy? Do you mean muscle atrophy? There is talk about muscle atrophy but no scientific evidence and I have never seen any atrophy in any of my patients who have had me inject their botox for almost 20 years. Whatever you are identifying should be evaluated and hopefully diagnosed so you can get reassurance or so it can be treated.
Web reference: http://www.thenyac.com/botox/index.html