You get shingles
if you were infected with chicken pox earlier in life and something activates the dormant virus
and causes shingles.
The chicken pox virus never goes away completely, it will lie dormant in one's neural cells. Then, later in life, the virus can re-awaken and cause shingles. Children
can get shingles, but this is rare. See your doctor about treatment and prevention.
Answer assisted by David Escobar, Medical Student