The human body is a marvelously complex system. And, as with any complex system, it can react to disease in complex and seemingly strange ways.
Shingles is an example of something that comes about in a strange way. After having the chicken pox, the varicella virus migrates and hides in the spine, existing in a non-threatening way.
At some point in a person’s life, stress on the body and a decreased immune response can leave one vulnerable to a “break out” of the varicella zoster (shingles) virus. This break out comes in the form of shingles.
Older people are more vulnerable to shingles break outs due to age and compromised immune system. If you have ever had them, you know that herpes shingles is a painful condition. It radiates out of the nerves connected to the spine (pathway), generally affecting only one side of the body.
I have written an article with much more detail on HubPages. If interested – and people over 60 should be interested – click the following link http://hubpages.com/hub/Herpes-Zoster-Shingles-Symptoms-and-Treatment