I have red skin discoloration in outer corners of eyes. also, purplish-red near tear ducts (skin). why? from sinus infection? what can i do for it?

Possible infection: Redness of the skin around the eyes is typically from things like blepharitis, a type of inflammation of the eyelids, or from allergies. Rubbing the eyes can also cause the redness. The cause also depends on any other symptoms like itching, dryness, or discharge. A sinus infection would rarely cause the redness you describe. In any case you should visit your eye doctor to have it checked out.