Burning pain, tingling, or aching with a band-shaped rash on the left
or right side of the chest, abdomen, or face and scalp may mean that you have a
viral infection called
shingles (herpes zoster). This infection is caused by
the reactivation of the
chickenpox virus in the body years after the person
has had chickenpox. The virus usually affects the large nerves that spread
outward from the spine or the nerves of the scalp and face.
The pain can start days or weeks before the rash appears. The rash
will first form blisters, then scab over, and finally clear up over a few
weeks. See a picture of a
shingles
rash
. The rash can be in a band, a strip, or a small area.
No one knows what makes the virus active again. Shingles is more
common in older adults and people who have weakened immune systems, but it can
affect anyone who has had chickenpox.
Contact with the herpes blisters can cause chickenpox in a person who
has not had chickenpox or the chickenpox vaccine. Since shingles is caused by
the reactivation of the chickenpox virus, you do not get shingles from exposure
to shingles.
If you suspect you have shingles, you may need to call your health
professional to confirm the diagnosis and talk about medicine that can limit
the pain and rash. Medicines are most effective if started within the first 2
days of the start of the rash.