HHV-6 and pityriasis rosea

We reported a very rare case of pityriasis rosea with multiple gigantic herald plaques after influenza vaccination. In a state of altered immunity, reactivation of HHV-6 and/or HHV-7 could result through a T-cell-mediated skin-oriented reaction in an atypical presentation of a self-limited suberythrodermic gigantic pityriasis rosea.
 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4025149/