Extract from the leaflet been assessed for readability by the British Association of Dermatologists’ Patient Information Lay Review Panel
What is shingles?
Shingles is a painful blistering rash caused by the reactivation of the virus that causes chickenpox, known as the varicella zoster virus. The virus is called herpes zoster when it causes shingles and herpes varicella when it causes chickenpox. They were named before it was known that a single virus was responsible for both conditions.
What causes shingles?
After a person has had chickenpox, the virus lies inactive in the nervous system. When the virus reactivates it multiplies and moves along the nerve fibres to the area of skin supplied by those particular nerves; shingles then appears in this area. Shingles can appear anywhere on the body. Anyone that has previously had chickenpox may subsequently have an outbreak of shingles. About 1 person in 5 will develop shingles at some time. Most outbreaks of shingles occur for no obvious reason, but are more likely if the individual:
Is shingles contagious?
Shingles is not caught from someone who has shingles or from someone who has chickenpox. It develops when the inactive herpes zoster virus awakens, for example when a person’s immune defences are weaker than normal. However, a person affected by shingles can give chickenpox to someone who has never previously had chickenpox. A person with shingles is infectious from the point of the first blister until the blisters crust over (approximately 7 days).
Is shingles hereditary?
No.
What are the symptoms of shingles?
Before the blisters appear, the first obvious symptom is pain in the area where the virus is reactivating. However, it is important to note that not all people affected by shingles will experience pain. For example, many young people will only experience an itching or mild burning sensation in the affected area. For those who do experience pain, it is usually in one small area. The pain can range from mild to severe and could be a constant dull, tingling, aching or burning pain/sensation. The rash usually appears a day or two after the onset of pain, and a fever and/or a headache may develop.
What does shingles look like?
Shingles appears as a group of red spots on a pink-red background which quickly turn into small fluid-filled blisters. Some of the blisters burst, others fill with blood or pus. The area then slowly dries, crusts and scabs form. The scabs will fall off over the next two to three weeks. The rash usually covers a well-defined area of skin on one side of the body only (right or left) and will not cross to the other side of the body.The position and shape of the rash will depend on which nerves are involved. Shingles can affect any area, but the most common areas includethe body or down an arm or leg. Less commonly, shingles can affect one side of the face, and occasionally can cause complications affecting one eye.
How is shingles diagnosed?
A diagnosis is usually straightforward, based on the presence of pain, tingling, itching, followed by the rash and the typical appearance/shape of the rash. If there is doubt about the diagnosis, scrapings may be taken from a blister by the doctor to then be examined under a microscope, or a viral swab test can be taken.
Can shingles be cured?
Shingles usually resolves on its own within a few weeks. Oral antiviral treatment may help clear the rash sooner and can reduce its unpleasant effects. Rare complications which could occur when the outbreak is on the face:
The pain caused by shingles may persist long after the rash has cleared, particularly in the elderly. This is called postherpetic neuralgia and may persist for a long time. Postherpetic neuralgia requires a very different kind of treatment and the GP will be able to advise the best treatment for this.
How can shingles be treated?
Self help (What can I do?)
Links to patient support groups:
Shingles Support Society
Tel: 0845 1232305
Email: info@shinglessupport.
Web: www.shinglessupport.org
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