I would be concerned too! I am quite sure the plant is dehydrated. I can see the stem in the background of your picture looking quite wrinkled.
Have you repotted the plant anytime recently? It may just need new soil. Regardless, what is evident in the plant is often related to the roots, and so I believe repotting it might be the best solution. And however much you would hate doing this, I would cut off a lot of the leaves, it is right now putting all its energy into sustaining those leaves.
Let us know what you find out.
