Age
The risk of developing shingles is increased when you get aged due to the reduced strength of the immune system. That is the reason why people who are more than 50 years old are strongly recommended to get Zostavax, a vaccine for shingles. However, if you have ever had a severe or life-threatening allergic response to a component of shingle vaccines, it is better to stay away from this method. While the elderly are more likely to suffer from shingles, people of all ages can still experience their symptoms due to other causes as mentioned. [4]
