# When Does Shingles Threaten and How to Protect Yourself Shingles (herpes zoster) is a viral disea
Shingles is one of those conditions that most people have heard of, but few pay attention to until it appears in themselves or someone close to them. Yet it is a disease that can be extremely painful and, in some cases, leaves lasting consequences. The key to protection is understanding when shingles poses a threat, who is most at risk, and what can be done for prevention.
Shingles is caused by the varicella-zoster virus – the same virus responsible for chickenpox. After a person has had chickenpox, the virus does not disappear from the body. Instead, it hides in nerve cells and can remain there for decades without causing any problems. The issue arises when it reactivates. And that is precisely when shingles develops – a painful rash that typically spreads in a stripe along the nerves on one side of the body. According to the World Health Organization, shingles affects approximately one in three people during their lifetime.
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Why the virus reactivates and who is most at risk
To be clear: shingles cannot affect someone who has never had chickenpox or received the relevant vaccine – in such a case, they would contract chickenpox, not shingles. Viral reactivation depends on the state of the immune system. A healthy immune system can keep the virus in a latent state. However, once immunity weakens for various reasons, the virus gets the opportunity to awaken.
Age is one of the most significant risk factors. As the years pass, the body's natural immune response weakens, which is why shingles is considerably more common in people over the age of fifty. According to data from the Czech Vaccinology Society, the risk of the disease increases significantly after the age of sixty and is even higher after seventy. Approximately half of all shingles cases occur in people over sixty.
Age, however, is not the only factor. Chronic stress, which modern society knows well, is among the triggers that contribute to weakening immunity. It is no coincidence that many people notice the first symptoms of shingles precisely during periods of intense work pressure, family crises, or after a serious illness. Stress raises cortisol levels, which over time suppresses immune function. Consider a forty-year-old going through a difficult divorce, working overtime, who suddenly wakes up with a strange burning pain on one side of the chest – exactly that kind of scenario can lead to a diagnosis of shingles.
Another risk factor is chronic illness, particularly conditions that directly affect the functioning of the immune system. People with HIV/AIDS, cancer patients undergoing chemotherapy or radiation therapy, organ transplant recipients taking immunosuppressive drugs – all of these individuals are significantly more vulnerable to shingles. People with diabetes, kidney disease, or chronic inflammatory conditions are similarly at risk. As the American physician and writer Atul Gawande wrote: "Illness is not merely a biological event – it is the intersection of body, mind, and circumstance."
Symptoms, complications, and when the situation is serious
Shingles does not begin with an immediately visible rash. It is typically preceded by several days of unpleasant symptoms – burning, itching, tingling, or stabbing pain in a particular area of the body. This phase can be deceptive, as it is easily mistaken for another condition, such as nerve inflammation or muscle pain. Only afterwards do the characteristic blisters appear, clustering in a stripe – which is, incidentally, the origin of the term "shingles" (from the Latin cingulum, meaning belt or girdle).
The rash most commonly appears on the torso, specifically the chest or abdomen, but it can also affect the face, neck, or limbs. If shingles appears in the area of the eye, this is a serious condition that can threaten vision and requires immediate medical attention. The ocular form of shingles, known as herpes zoster ophthalmicus, affects approximately 10 to 25 percent of all cases involving the head and, without timely treatment, can lead to permanent corneal damage.
One of the most feared complications is postherpetic neuralgia – persistent nerve pain that can last for months or even years after the rash itself has resolved. This pain is often described as burning, electric, or stabbing, and can be so intense that it significantly reduces quality of life. The incidence of postherpetic neuralgia increases with age – while only a small percentage of younger patients develop it, in people over seventy it is a complication that occurs in up to one third of cases.
In more severe cases, shingles can also cause pneumonia, encephalitis (inflammation of the brain), or Ramsay Hunt syndrome, in which the facial nerve is affected and may result in partial facial muscle paralysis, hearing loss, or dizziness. These complications are less common, but all the more serious for it – and again, older patients and people with weakened immune systems are at greater risk.
The natural question, then, is: can shingles be prevented? Fortunately, the answer is yes, on several levels.
Prevention, treatment, and the role of lifestyle
The most effective prevention is vaccination. In the Czech Republic, a vaccine against shingles is available and is recommended particularly for people over the age of fifty. Modern vaccines are highly effective – according to data published in the New England Journal of Medicine, the recombinant vaccine Shingrix reduces the risk of disease by more than 90 percent. Even if a vaccinated person does contract shingles, symptoms tend to be milder and the risk of complications considerably lower. Although vaccination is neither mandatory nor fully covered by health insurance in the Czech Republic, an increasing number of doctors are actively recommending it to their patients.
Beyond vaccination, the overall state of the immune system plays a crucial role, and this is where everyday lifestyle choices come into play. Quality sleep, a balanced diet rich in vitamins and minerals, regular physical activity, and stress management are the pillars on which a resilient immune system rests. Scientific research has repeatedly confirmed that chronic sleep deprivation weakens the immune response, while regular physical activity has a demonstrably positive effect on immune function. Studies from the University of California, San Diego have shown that even moderate aerobic activity – such as brisk walking for thirty minutes a day – can significantly improve the body's resistance to infections.
In the context of a healthy lifestyle, nutrition is also worth mentioning. A diet rich in antioxidants, vitamin C, vitamin D, and zinc supports the immune system and helps keep the virus in its latent state. Fermented foods, vegetables, fruit, and quality proteins form the foundation of a diet that protects the body. Conversely, excessive alcohol consumption, smoking, and highly processed foods weaken immunity and may contribute to viral reactivation.
If the disease does occur, it is essential to begin antiviral treatment as soon as possible – ideally within 72 hours of the appearance of the first symptoms. Antivirals such as acyclovir, valacyclovir, or famciclovir do not eliminate the virus entirely, but they significantly shorten the course of the illness, reduce the intensity of pain, and lower the risk of complications. Pain can be managed with a combination of analgesics; in more severe cases, medications intended for neuropathic pain are used. Treatment of postherpetic neuralgia is more complex and may involve various classes of medication, physiotherapy, or even psychological support.
An important component of care is also rest and stress reduction during illness. The body needs energy to fight the virus, and overexerting the organism is therefore counterproductive. People who allow themselves genuine rest during shingles and do not neglect treatment generally recover more quickly and have a lower risk of long-term complications.
Shingles is not a disease to be taken lightly. Although most cases resolve without serious complications, the pain and discomfort it brings can be considerable – and in some patients, it leaves a lasting mark in the form of postherpetic neuralgia. Knowing when shingles poses a threat, who is most at risk, and what steps can reduce that risk is the first and most important line of defence. Caring for the immune system through a healthy lifestyle, vaccination at the appropriate age, and prompt response to the first symptoms – these are tools that each of us has, to a significant extent, in our own hands.
