This condition is the defining symptom of the perinatal B19 parvovirus, which is often referred to as the "fifth" in a group of six diseases defined by this characteristic.
The "multiforme" spectrum named for this condition is often considered to contain the horrifying Stevens-Johnson Syndrome. This condition is the defining symptom of the perinatal B19 parvovirus, which is often referred to as the "fifth" in a group of six diseases defined by this characteristic. Diseases that characteristically present with this symptom include Bloom's disease and a (*) Borrelia infection which often results in a form known as "migrans." Hemorrhage-induced purpura is distinguished from this condition as it will not blanch in response to pressure. This symptom indicates the process of hyperaemia as a result of increased vasodilation, and its "malar" form provides the name to a major autoimmune disorder. For 10 points, identify this physical symptom whose forms include the "bull's eye" seen in Lyme Disease and the "butterfly" associated with Lupus, which generally refers to a reddening of the skin.
The "multiforme" spectrum named for this condition is often considered to contain the horrifying Stevens-Johnson Syndrome.
Rashes [or Erythmas, the actual medical term for the only type of rash described in this question]