I have read that atopic dermatitis can cause 'pruny fingers'. One remedy to try is to soak the finger tips in lukwarm water for 10 minutes and then coat with petroleum jelly or aquafor. Put on a pair of gloves.
Hello~First, stop doing the Google searches, they only lead to more anxiety, I know, I am the queen of doing them, but I have cut way back.
If the wrinkling worries you, then it might be a wise idea to contact your GP or a dermatologist, it is probably nothing, but for peace of mind, getting a professional opinion is always best.