What would cause a hive to surface right below one eye?? Nothing else seems to be affected. I've had pretty serious attacks the past couple of years where both eyes are so seriously affected that they swell. I've been diagnosed the past year with allergies to: dogs, corn pollen, ragweed, dust mites, and a chemical called thimerosal. I've tried to be cautious of what I'm coming in contact with and although, this attack isn't as bad as what it has been in the past, since I've tried being careful I'm wondering if there is something else I should be doing. It seems I am most often affected in August and December/January.