I am travelling in Oregon and have recently noticed red, itching spots on my skin, and I am assuming they are bug or spider bits, but am not certain. Some of them appear to be swelling. A couple are on either jaw line by the ear, but most are on my upper arm (behind the biceps) and elbows, and some are on behind the knee and on the side of the knee. I currently am taking warfarin, linosopril, and diabetic medications, glipizide and metformin, and am wondering if I can take benodril or something other.