Hello,
There are many possibilities for puffy eyes and the chief causes include oversleeping/lack of sleep, diet, fluid retention, alcohol and tobacco use, allergies, skin disorders
. Treatment is diagnosis specific and for this you need to get all these causes ruled out.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.