Hello,
I just wake up this morning with a red patch under my left eye?
This is the third time this happened to me, after 2 or 3 days is gone.
Any ideas?
Thanks

Sounds like Eczema, perhaps based on coming in contact with something that irritates the skin. If over the counter hydrocortisone cream and moisturizers, then you should see a Doctor for possibly more strong prescription alternatives.

Reference