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October 24, 2011
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Shingles
(Herpes Zoster)

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Shingles and Pregnancy

Read about the risks, complications, treatment, and prevention of shingles during pregnancy.

Shingles Prevention: Reduce Your Risk While Pregnant

The varicella-zoster virus is highly contagious. If you have not had chickenpox, it's important that you avoid exposure to anyone known to have the infection -- or even crowds where you may come in contact with the infection, particularly if you are pregnant. If you already had chickenpox, you cannot catch shingles from someone with chickenpox or shingles.

Having chickenpox during pregnancy could potentially lead to chickenpox infection or birth defects in your unborn child, depending on when you are infected. Shingles, too, could potentially cause problems for your baby, but most experts agree the risk is less than with chickenpox. In one large study, there was no evidence of fetal harm in women who developed shingles.

If you're not sure if you have had chickenpox, your doctor can perform a blood test to check for antibodies to VZV. If you have the antibodies (indicating you have already had chickenpox infection), you run the risk of shingles in the future, but you cannot catch shingles from someone else.

Learn more about shingles prevention during pregnancy »

Shingles facts

  • Shingles is caused by the same virus that causes chickenpox and can be spread to people who have not had chickenpox.


  • Shingles, also known as Herpes zoster, is not related to the sexually transmitted herpes virus disease called herpes genitalis.


  • Shingles may cause pain that can continue after the rash disappears.


  • Steroids and antiviral drugs can help prevent long-term pain after shingles if they are started within the first two days of the appearance of the rash.


  • A vaccine is available for people over 60 years of age to reduce the incidence and severity of shingles.

What is shingles? What causes shingles?

Shingles is a skin rash caused by the same virus that causes chickenpox. This virus is called the Varicella zoster virus (VZV) and belongs to the herpes family of viruses. After an individual has chickenpox, this virus lives dormant in the nervous system and is never fully cleared from the body. Under certain circumstances, such as emotional stress, immune deficiency (from AIDS or chemotherapy), or with cancer, the virus reactivates and causes shingles. In most cases of shingles, however, a cause for the reactivation of the virus is never found. Anyone who has ever had chickenpox is at risk for the development of shingles, although it occurs most commonly in people over the age of 60. It has been estimated that up to 1,000,000 cases of shingles occur each year in the U.S.

The herpes virus that causes shingles and chickenpox is not the same as the herpes viruses that causes genital herpes (which can be sexually transmitted) or herpes mouth sores. Shingles is medically termed Herpes zoster.

What are shingles symptoms and signs? How long does shingles last?

Even when there is no rash, the pain of shingles may be apparent. Before a rash is visible, the patient may notice several days to a week of burning pain and sensitive skin. When the characteristic rash is not yet apparent, it may be difficult to determine the cause of the often severe pain. Shingles rash starts as small blisters on a red base, with new blisters continuing to form for three to five days. The blisters follow the path of individual nerves that come out of the spinal cord in a specific "ray-like" distribution (called a dermatomal pattern) and appear in a band-like pattern on an area of skin. The entire path of the affected nerve may be involved, or there may be areas in the distribution of the nerve with blisters and areas without blisters. Generally, only one nerve level is involved. In a rare case, more than one nerve will be involved. Eventually, the blisters pop, and the area starts to ooze. The affected areas will then crust over and heal. The duration of the outbreak may take three to four weeks from start to finish. On occasion, the pain will be present but the blisters may never appear. This can be a very confusing cause of local pain.

Is shingles contagious?

Yes, shingles is contagious. Shingles can be spread from an affected person to babies, children, or adults who have not had chickenpox. But instead of developing shingles, these people develop chickenpox. Once they have had chickenpox, people cannot catch shingles (or contract the virus) from someone else. Once infected, however, people have the potential to develop shingles later in life.

Pictures of shingles (herpes zoster) on the face
Pictures of shingles (herpes zoster)

Shingles is contagious to people who have not previously had chickenpox, as long as there are new blisters forming and old blisters healing. Similar to chickenpox, the time prior to healing or crusting of the blisters is the contagious stage of shingles. Once all of the blisters are crusted over, the virus can no longer be spread and shingles is no longer contagious.



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Shingles

What is keratitis?

Keratitis is the medical term for inflammation of the cornea. The cornea is the dome-shaped window in the front of the eye. When looking at a person's eye, one can see the iris and pupil through the normally clear cornea. The cornea bends light rays as a result of its curved shape and accounts for approximately two-thirds of the eye's total optical power, with the lens of the eye contributing the remaining one-third.. Only the very thin tear film lies between the front of the cornea and our environment.

The cornea is about 0.5 millimeter thick. The back of the cornea is bathed in the aqueous fluid that fills the anterior chamber of the eye. The cornea has a diameter of about 13 millimeters (½ inch) and, together with the sclera (the white part of the eye) forms the entire outer coat of the eye.

What are the causes of keratitis?

Keratitis, the eye condition in which the cornea becomes i...

Read the Keratitis article »






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