I just got back from Florida, and I haven t been in the ocean since yesterday around 10:30 am. Today at noon I noticed a throbbing pain in my outer ear, it wasnt too swollen but in the evening it has gotten even more swollen, from the lightest touch it stings a little, doesn t look like a pimple what so ever. I put some cortisone on my ear to see if that will kill the swelling. I d like to know the cause to this pain and swelling, and what I should do to treat this. I m not allergic to anything, the swelling and pain is on my left outer ear. Thanks for your help in advance to whoever answers.