33a20394_Immunise___Glossary_P_Q_R_S_Definition
[Term] Shingles (herpes zoster infection) [Definition] 
This illness is caused by reactivation of the varicella-zoster virus, the virus that causes varicella (chickenpox). The virus remains in the nerve cells for a long time after recovery from varicella. As immunity to the virus decreases over time, the virus travels down the nerve cells and causes a painful rash. Usually occurs in adults about the age of 50 years, although can occur at any age.
Immunise - Glossary
Definition