General
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• Infection in infancy causes exanthem subitum (HHV-6B), a mild infection
• May be associated with some cases of histiocytic necrotizing lymphadenitis/Kikuchi’s (Diagn Mol Pathol 2006;15:49)

Micro description
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• T cells in expanded paracortical areas with intranuclear and cytoplasmic inclusions (Mod Pathol 2004;17:1427)

Positive stains
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• HHV6

Electron microscopy description
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• Cytoplasmic and nuclear viral particles

Molecular description
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• HHV6 by PCR

Additional references
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• Indian J Pediatr 2004;71:89

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