What Causes Swelling In The Eye Lid After Taking Benedryl?
Take anti inflammatory motrin or aleve
First we need to determine the nature of swelling and it's cause. Generally insectbite and local infections are commoner.
If we take these two into consideration your neighbor should take strong anti inflammatory like Motrin 400 mg thrice a day till you meet a doctor.
benadryl has no role here so stop.
Ice may help you can continue.