Herpes zoster, or shingles, is an uncomfortable/painful viral infection caused by the varicella-zoster (chicken-pox) virus. After a person has chickenpox, the virus remains dormant in the nerve tissues and can reactivate years later, typically characterised by a red, blistered rash around one side of the body.
In Singapore, there are about 30,000 new cases each year, emphasising the importance of vaccination to prevent this condition.
Often the first sign, this sensation can occur in a specific area of the body, usually one side, before the rash appears.
The affected area may feel itchy or uncomfortable.
A red rash typically develops in a band-like pattern on one side of the body or face.
Fluid-filled blisters often form over the rash, which may break open and scab over.
Some individuals experience flu-like symptoms.
PHN refers to long-lasting nerve pain that continues in the area where a shingles rash once appeared, even after the skin has healed.
While shingles can affect people of any age, the risk increases significantly with age, especially after 50.
Individuals with conditions such as cancer, HIV/AIDS, or those on immunosuppressive therapies like chemotherapy or steroids.
High levels of stress or physical trauma can weaken the immune system and trigger shingles.
Anyone who has had chickenpox is at risk because the virus remains dormant in the body and can reactivate as shingles.
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The shingles vaccine has been shown to be effective at preventing shingles in individuals aged 50 and older. It also significantly reduces the risk of developing postherpetic neuralgia (PHN), a type of long-lasting nerve pain that can persist for months or even years. By getting vaccinated, you are not only lowering your chances of experiencing shingles but also helping to prevent the debilitating complications that can affect your quality of life.
Shingles vaccination (Shingrix) is administered in two doses. The second dose is typically given 2 to 6 months following the initial dose.
Vaccination against shingles is recommended for:
Adults Aged 50 and Older
Even if you’ve had shingles before, vaccination can help prevent future occurrences or reduce severity.
People with Weakened Immune Systems
Adults who have weakened immune systems because of diseases, such as cancer, or medications should discuss with their healthcare professional whether the vaccine is safe for them to use.
Adults with a History of Chickenpox
Since shingles is caused by the reactivation of the chickenpox virus (varicella-zoster), anyone who has had chickenpox is at risk.
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Shingles itself isn’t contagious, but the virus that causes shingles (the varicella-zoster virus) can spread to others and cause chickenpox in those who have never had it or been vaccinated. If you have shingles, it’s a good idea to keep the rash covered and avoid close contact with pregnant women, newborns, and anyone with a weakened immune system until the rash has crusted over.
You can get the shingles vaccine starting at age 50. It’s given in two doses, with the second dose recommended 2 to 6 months after the first. If you’re unsure about the timing, our clinic is here to help you schedule your appointments.
While vaccination against shingles markedly reduces the risk of developing the disease, it is not possible to completely rule out the fact that someone who has been vaccinated may develop shingles. If a person who has been vaccinated does develop shingles, however, symptoms are typically milder, and the risk of complications, such as PHN, is reduced.
Most people aged 50 and above are encouraged to get the shingles vaccine. However, there are some exceptions. If you are pregnant, breastfeeding, or have a weakened immune system due to certain conditions (like cancer treatment, organ transplants, or HIV), it’s best to consult your doctor before getting the vaccine. Your doctor will guide you on what’s best for your individual health needs.
The protection from the shingles vaccine (Shingrix®) lasts for at least 4 years, with studies showing that it remains strong during this time. Some evidence suggests it may provide protection for up to 10 years. For the best and longest-lasting protection, it’s important to receive both doses of the vaccine. Your doctor can advise if any additional booster shots are needed as more long-term data becomes available.
Some mild side effects may occur, such as soreness at the injection site, fatigue, or a low-grade fever. These are usually short-lived and go away within a few days. If you experience anything unusual or severe, don’t hesitate to contact your doctor for advice.
Even if you’ve had shingles in the past, getting vaccinated can help prevent future outbreaks and reduce the risk of complications. It’s best to wait until you’re fully recovered and have healed before getting the vaccine. Speak with your doctor to determine the right time for you.