Note again the particular
points that help to differentiate smallpox from chickenpox:
in smallpox, the fever precedes the rash by 2 to 4 days,
the pocks on any part of the body are at the same stage of
development, and they develop slowly,
the pocks are more numerous on the arms and legs than on the body,
the pocks are usually present on the palms and soles,
death following smallpox is not uncommon, while in chickenpox death
is very rare.
When death occurs in a patient in whom chickenpox has been diagnosed,
smallpox should always be suspected.