Hi, I started taking tramadol extended release Monday. Two days ago, my feet stated itching and I found dozens of bumps on each foot. I thought the bumps were mosquito bites, but they have not begun to clear up and have grown larger. They don t look like mosquito bites, more like chigger or flea bites. I was around mosquitoes Thursday night. The bumps itch intensely, so much so that I m waking up six or seven times in the night. I ve applied calamine lotion, benadryl gel, hydrocortisone cream, an extra strength benadryl cream, and a baking soda warm water paste in the last 48hours to find relief from the itching. Nothing has helped. Could this be a rash caused by the tramadol, ConZip brand. I took IR tramadol years ago with no I ll effects.