Spider UNDER door handle!

How did you find it before sticking your hand in there? I got bitten by one in my firewood and it took only 15 minutes and my whole left arm was numb. I killed it and identified it as a common house spider. I called my dr right away but I was afraid to start driving to town which is 8 miles away because my arm was getting nummer as time went. It was a scary moment. ruined my afternoon!