Lifestyle

Why Shingles Pain Can Last for Months After the Rash Heals

By Curtis Jones · October 20, 2026

Most people think of shingles as a rash that runs its course in a few weeks. The rash usually does heal in two to four weeks, according to the Centers for Disease Control and Prevention. For some people, the pain stays.

That lingering pain has a name, postherpetic neuralgia, or PHN. The CDC calls it the most common complication of shingles and defines it as pain in the area where the rash was that continues more than 90 days after the rash began. It can last for months or even years. The CDC estimates that about 10% to 18% of people who get shingles will develop it.

Age plays a big role. The CDC says PHN is rare in people younger than 40, and that the risk rises with age. Older adults are more likely to have pain that is more severe and lasts longer. The Mayo Clinic says the condition mainly affects people older than 60.

Shingles itself is common. The CDC says about 1 in 3 people in the United States will have it in their lifetime, and an estimated 1 million people get it each year. It comes from the same virus that causes chickenpox, which stays in the body for life and can reactivate later in life. More than 99% of Americans born before 1980 had chickenpox, the CDC says, even if they don’t remember it.

The reason the pain can outlast the rash has to do with the nerves. Mayo explains that PHN happens when nerve fibers are damaged during a shingles outbreak. The damaged fibers can’t send messages from the skin to the brain the way they normally do, so the signals get confused and pain can continue.

People with PHN describe it in different ways. Mayo says it may feel like sharp burning or jabbing, or a deep ache. Many people can’t stand even the touch of clothing on the skin where the rash was. Less often it causes itching or numbness. Over time, long-lasting pain can bring trouble sleeping, tiredness, a poor appetite, and depression.

Besides age, Mayo lists other things that raise the risk: a weakened immune system, a severe rash, a rash on the face or torso, diabetes or lung or heart conditions, not getting antiviral medicine within 72 hours of the rash, and not being vaccinated. The CDC adds that a larger or more painful rash makes PHN more likely.

Timing matters. Pain, itching, or tingling can show up in the area a few days before the rash appears, the CDC says. Antiviral medicines such as acyclovir, valacyclovir, and famciclovir shorten the illness and work best when started as soon as the rash appears. Mayo says starting them within 72 hours lowers the risk of PHN. If you think you have shingles, call your doctor right away.

The best protection, the CDC says, is vaccination. The CDC recommends two doses of Shingrix, given two to six months apart, for adults 50 and older. In studies, it was 91% effective at preventing PHN in adults 50 and older, and 89% effective in those 70 and older. There is no upper age limit, and the CDC says to get it even if you’ve already had shingles or the older Zostavax shot. Side effects such as a sore arm, tiredness, or muscle aches usually pass in two to three days.

Cost shouldn’t stand in the way. Medicare.gov says you pay nothing for the shingles vaccine if you have Part D. The CDC says it is available at doctor’s offices and pharmacies.

This article is for general information and is not medical advice. Talk with your doctor or pharmacist about whether the shingles vaccine is right for you. This article was produced with the assistance of AI and fact-checked against the sources cited by LightWave Reports.