 [ Symptoms ] my wife and i are 75 and 74 years old and not eligible for medicare or medicaid we tried to get health insurance on the website but got a message that as we have medicare according to our age we cannot get the insurance on the health exchange so how can we get the insurance [ Disease ] an allergic reaction is often sudden hives that are very pruritic itchy an amoxicillin side effect usually occurs near the end of the course of treatment day 8 10 not day three and is bright red occuring all over the body this does not usually itch so it could be either one i do not have enough specific information and the ability to examine your baby to offer you a definitive answer