The bull's-eye rash (erythema migrans) of lyme disease occurs or is recalled in only 30% + cases so no evidence or recall of a rash does NOT mean no Lyme Disease to the clinician. It is not always a bull's eye and can be generalized in appearance. It is not always at the site of the bite. See reports on rashes. Many myths about the rash have resulted in misdiagnosis. One such myth is that the rash is usually the size of a quarter or silver dollar. The rash may vary greatly in both size and appearance. There may be more than one on the body (several at one time). The most damaging myth is that all patients who have lyme or at least the large majority get a rash of any kind. This has been proven to not be the case yet far too many physicians use this as diagnostic criteria rendering a negative diagnosis.