The cause.
Caused by a virus called "Chicken Pox-Herpes Zoster infections isuk Sai (varicella-zoster virus or vzv)" this is the first type of virus infections (which usually occurs in childhood), mainly to show the symptoms of chicken pox disease. Minority will have no symptoms appear after damage from the disease chicken pox. Infections are hiding on the skin and the nervous hitch under the alias, for example, a long period of several years to sip a year without any abnormal symptoms.