Most adults over the age of 40 in the United States have had the childhood disease of chickenpox. Because of that, those same people now have the virus that caused it to begin with lying dormant in nerve tissue somewhere in their body.

Varicella zoster virus (VZV) is the culprit that can lead to shingles, a disease characterized by a painful, blistering skin rash affecting one side of the body. Anyone who has ever had chickenpox is at risk for the inconvenience of shingles. The virus that caused chickenpox can be reactivated by factors such as illness, immune suppressing medications, or stress especially in adults older than 50.

How do shingles develop?

The majority of people who have had chickenpox contracted it as a child. Once a person has had chickenpox, the immune system never totally eliminates the virus that caused it. The virus remains dormant in certain nerve cells in the body located along the spinal cord.

While in the inactive state, a person will not experience any symptoms from the virus. But for reasons not completely understood, the varicella zoster virus can reactivate years later as it travels along nerve paths to erupt into shingles. The nerve branch it follows is usually located in a band on the trunk of the body. Shingles will often be present on only one side of the body, with the spinal cord as the dividing line. Occasionally shingles can appear on the legs, neck, mouth, and face.

Symptoms of shingles

A person will know something is wrong as there are specific symptoms shingles have which include the following:

· Pain - Shingles begin with burning, itching, tingling, or a stabbing sensation in the area where the rash will develop. The pain may be constant or intermittent.

· Flu-like symptoms – fever, headache, body aches, or fatigue

· Blistering rash – This is the tale-tell sign of shingles. It usually appears a few days after the pain and discomfort begin typically starting out as a cluster of small red patches that eventually develop into small blisters. The blisters are filled with fluid that will break open after which the sores will begin to slowly dry and crust over.

Once the sores have broken open and fallen off, the rash will clear up in about four weeks. Occasionally, if the rash was severe, there can be skin discoloration or scarring of the skin.

A person who has active, blistering shingles can spread the VZV to others who have never had chickenpox and have not been vaccinated for chickenpox making them at risk of developing the childhood disease. Shingles itself cannot be transmitted from person to person.

Treating shingles

Anyone who notices symptoms of shingles needs to see their doctor right away. The doctor will be able to diagnosis shingles based on the appearance of the characteristic rash.

The treatment for shingles is to prescribe antiviral medication and pain medication.

Complications of shingles

Even though the prognosis of shingles is good, not everyone who develops shingles will necessarily be done with it in approximately a month. Complications can occur which may include:

· Long-term lingering pain. This can happen if the nerve fibers are damaged during a shingles outbreak. The chronic and excruciating pain can last for months or less commonly for years even after the rash has disappeared. This is known as postherpetic neuralgia. Between 50-60% of adults over the age of 60 who have not been vaccinated against shingles will develop this condition.

· Vision loss – If shingles develop along a nerve pathway of the face this can spread to the area of the eyes. This can possibly lead to a painful eye infection and possible vision loss. Anytime shingles appear around the eye area, it needs to be evaluated right away by an ophthalmologist.

· Balance or hearing problems – Shingles may result in facial paralysis, hearing or balance issues depending on the nerves affected.

· Infections – A shingles rash always has the possibility of developing a bacterial skin infection at the site.

Preventing shingles

Fortunately since 2006 there has been a vaccine for shingles given in a one dose shot. Since it occurs more frequently in older adults, the shingle vaccine – Zostavax – recommended by the Centers for Disease Control (CDC) is given to adults age 60 or older and who need to be healthy at the time given. The Food and Drug Administration has approved the shingles vaccine for people aged 50 years and older even though the CDC does not have a recommendation for routine use of the vaccine in people aged 50-59.

Anyone with a weakened immune system cannot get the vaccine as it contains a live virus. Even if a person had shingles when they were younger, it is still recommended to get the vaccine since it can recur.

The vaccine can keep the dormant virus in check by boosting a person’s immunity to the VZV. The vaccine is not 100% foolproof – it can reduce shingles by 50% but in those who develop shingles even with the vaccine, the duration and severity of the outbreak is less severe and of a shorter duration than people who don’t get the vaccine.

The vaccine will also reduce the risk of developing chronic postherpetic neuralgia by 67%.

Only 24% of people over the age of 60 have been vaccinated for it. Many older adults are missing out in taking advantage of being vaccinated for shingles avoiding the pain and possibly other more serious complications.