That actually looks a lot like my eyelid when I accidentally put acne cream over top of lotion that hadn't had time to soak in a dry. Both are fine on my skin seperatly but, not together.
Could there have been any products used in that area that could have caused a reaction when mixed together?
lotions, sunscreens, creams, milk spills, eye drops, eye medication, etc...?
could any of those been used on that area around the same time and perhaps mixing together creating a rash?
Aside from that I don't have any guesses other than what has already been suggested to you.
~TRACY, wife to loving dh, mommy to dd (10/05), ds(12/08), 3 kitties, & 2 pups.