If you have had chicken pox, you might get shingles later in life. Shingles is caused by the herpes zoster virus (also called the varicella zoster virus). After you have had chicken pox, the zoster virus stays in your body and lying dormant. For 1 in 3 people in the US, the virus activates and causes shingles.
The symptoms of shingles are pain, itching or tingling in the area where a rash develops. The rash is usually on just one side of the body in a stripe. Other symptoms include headache and fever. One of the complications of the disease is post-herpetic neuralgia which is pain caused by nerve damage in the area where the rash occurred.
There is vaccine that is recommended for people over the age of 60. It reduces the risk of developing the disease by 51%.
Here is an infographic by the Cleveland Clinic which addresses some of the myths about shingles.