I Have Extra "Fold" on Eyelids, Why and How Can I Fix This? (photo)

For the past 2 days I have noticed an extra "fold" on my eyelids. They were not there before two days ago. I am only 26 (recent!) and I am wondering why these folds appeared and how to fix them. My eyes are always itchy and red and I try not to rub them. I also constantly have bags under my eyes. Could this all be related? The weather has been warmer than usual for this time of year but allergies haven't been affecting me yet. How can I fix this and what could be the cause?