Shingles (herpes-zoster) can’t cause a
fever normally because, thanks to the
immune system, the virus outbreak remains
restricted only to a certain skin area.
Only in cases where the immune system is
suppressed (HIV/AIDS, chemotherapy, post
transplantation patients) can herpes
zoster be spread and cause serious
complications (encephalitis, pneumonia,
etc) that can be manifested with fever,
along with the other symptoms.
In some rare cases, herpes-zoster can
provoke acute demyelinisating encephalitis
(brain inflammation) that represents a
kind of allergic reaction and can be
manifested with fever along with the other
symptoms.
If the skin lesion is large and
secondarily infected with bacteria, it
might cause a fever.
The option that you mentioned (another
viral infection at the same time as
shingles) is possible and more likely than
the previous options, especially in your
case.
There is no data that Aciclovir can cause
fever and chills.
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