Shingles (Herpes Zoster): First Symptoms, the 72-Hour Rule, Is It Contagious and How Long It Lasts
Short answer: Shingles (herpes zoster) is the chickenpox virus, dormant since childhood, reawakening along a single nerve years later. It usually begins with burning, tingling or pain on one side of the body; within 2–3 days a band of fluid-filled blisters appears in the same area. Antiviral treatment is recommended within the first 72 hours of the rash, so do not wait to be examined if you suspect it. Shingles around the eye, on the tip of the nose or in the ear, and shingles in people with weakened immunity, are urgent.
In my practice I mostly see shingles in two situations: someone who spent days wondering whether the pain was the heart or the kidneys and whose rash has just appeared, or someone whose rash is over a week old and still hurts. This article is written to help the first group arrive in time. For the disease and its treatment in general, see shingles (herpes zoster) treatment.
What is shingles and why does it happen?
After chickenpox the virus (varicella zoster virus) is never fully cleared; it stays silent in nerve ganglia next to the spinal cord and inside the skull. With age or when immunity weakens, this control loosens, the virus reactivates and travels along one nerve to the strip of skin it supplies (a dermatome). That is why the rash is one-sided and band-shaped.
First symptoms: pain before the rash
Prodrome: 1–5 days before the rash, burning, stabbing, tingling, electric-shock pain or itch on one side; sometimes tiredness, mild fever or headache.
Rash: first redness, then clusters of small fluid-filled blisters (vesicles).
Pattern: on one side of the body only, like a belt or stripe, usually not crossing the midline. Most often the chest and back, then the face.
Course: new blisters can keep appearing for 3–5 days, then they dry and crust.
Pain before the rash can be mistaken for heart, lung, gallbladder, kidney or spinal disc problems. Equally, chest pain should not be dismissed as "probably shingles"; without a rash, other causes must be ruled out by a doctor.
Who gets shingles?
Age: risk rises clearly after 50; both frequency and severity increase with age.
Weakened immunity: cancer treatment, organ transplant, HIV, steroids or other immunosuppressive drugs and some biologic treatments.
Chronic conditions such as diabetes or chronic kidney disease.
Shingles also occurs in children and young adults; this alone does not point to a serious illness, but a doctor should assess it.
Is shingles contagious?
You cannot catch shingles from shingles. However, the fluid in the blisters carries the virus and can give chickenpox to someone who has never had chickenpox or the chickenpox vaccine.
Contagiousness lasts until all blisters have dried and crusted.
Keep the rash covered and wash your hands after touching it.
Until it crusts, avoid close contact with pregnant women, newborns, people who have not had chickenpox and people with weakened immunity.
In disseminated shingles (spread to several areas) the virus can also spread through the air, and stricter precautions apply.
Why "72 hours"? The logic of antiviral treatment
Antivirals stop the virus from multiplying; they do not bring back damaged nerve cells. Because the virus multiplies most in the first days, the earlier treatment starts, the better it works. Randomized trials and guidelines recommend starting treatment within 72 hours of the rash appearing. Early treatment shortens new blister formation, acute pain and healing time.
72 hours is not an expiry date. If new blisters are still appearing, if the eye or ear is involved, or if immunity is weakened, your doctor may start treatment after 72 hours too. Antivirals are prescription medicines; dose and duration are set by the doctor according to kidney function, age and other medicines. Do not start treatment on your own or with tablets prescribed for someone else; a doctor's assessment and follow-up are needed. Antiviral creams do not replace tablet treatment in shingles.
Emergencies: eye and ear
Shingles around the eye (ophthalmic zoster): rash on the forehead, eyelid, tip or side of the nose; a red, painful eye or blurred vision. A blister on the tip of the nose suggests the eye may be involved (Hutchinson's sign). Same-day antiviral treatment and an eye examination are needed.
Ear shingles (Ramsay Hunt syndrome): blisters in or around the ear, severe ear pain, weakness of one side of the face, hearing loss or vertigo. Needs prompt assessment.
Widespread shingles, weakened immunity, high fever, severe headache, stiff neck, confusion or weakness of an arm or leg.
Managing the pain
Painkillers in acute shingles are used on your doctor's advice; for severe pain, nerve-pain medicines may be added. Keep the rash clean and dry, wear loose cotton clothes and do not pop the blisters. Cool, damp compresses can soothe. Steroid tablets are not routinely recommended for shingles; in selected cases the doctor decides. Do not put herbal mixtures, toothpaste, alcohol or perfumed products on the rash; they increase irritation and infection risk.
Postherpetic neuralgia: the rash has gone, the pain has not
Pain lasting more than 3 months in the same area after the rash heals is called postherpetic neuralgia. The risk rises with age, with severe pain during the episode and with eye involvement. It needs its own treatment plan, which may include topical treatments and nerve-pain medicines prescribed and adjusted by a doctor.
How long does shingles last?
Prodrome: 1–5 days.
New blisters: usually for 3–5 days.
Crusting: within about 7–10 days.
Full healing: 2–4 weeks for most people. It can take longer in older adults and people with weakened immunity, and temporary marks or scars may remain.
Can shingles come back?
Yes. Most people have shingles once, but having had it does not guarantee immunity. Frequent or very widespread episodes may prompt a search for an underlying immune problem.
The shingles vaccine
The strongest evidence for prevention is for vaccination. The recombinant (non-live) zoster vaccine gave high protection against shingles in a large randomized trial in adults aged 50 and over. It is given as two doses, usually 2–6 months apart, and is also recommended for people who have had shingles, once the rash has healed. The vaccine does not treat active shingles. Availability and reimbursement differ between countries; suitability is assessed at the examination.
Shingles in pregnancy
Shingles in pregnancy carries a much lower risk for the baby than chickenpox in pregnancy, because the mother already has immunity to the virus. Treatment decisions still depend on the stage of pregnancy and are made by the doctor; tell your obstetrician. A pregnant woman who has never had chickenpox should call her doctor the same day after contact with someone with shingles.
When to see a dermatologist
One-sided, band-shaped painful blisters; ideally within the first 72 hours.
Rash around the eye, on the tip of the nose or around the ear (same day).
Age over 50, severe pain or immunosuppressive treatment.
A rash that spreads, becomes infected or has not healed in 2–3 weeks.
If you are abroad or travelling, do not wait for an appointment with me to start treatment: see a local doctor within 72 hours. Follow-up, scarring or lasting pain can be assessed later. My practice is in central Kırklareli, about 2 hours by car from Istanbul Airport. The diagnosis is usually clinical; in unclear cases a swab from a blister can be tested.
Frequently asked questions
What are the first symptoms of shingles?
Usually 1–5 days before the rash there is burning, stabbing, tingling or pain on one side of the body. Then redness and clusters of fluid-filled blisters appear in the same area.
Can you have shingles without a rash?
Rarely, the pain occurs without a rash, but a doctor considers this only after other causes of pain have been ruled out. Do not attribute one-sided pain to shingles on your own.
Is shingles contagious?
Shingles does not pass as shingles; but blister fluid can give chickenpox to someone who has never had it. Keep the rash covered until it crusts and avoid close contact with pregnant women, babies and people with weakened immunity.
Does treatment still help after 72 hours?
It is most effective when started early, but if new blisters are still appearing, the eye or ear is involved, or immunity is weakened, a doctor may start treatment after 72 hours. Do not skip the examination because you feel you are late.
How long does shingles last and when does the pain go?
The rash heals in 2–4 weeks for most people. Pain usually fades with the rash; if it lasts more than 3 months it is called postherpetic neuralgia and needs a separate treatment plan.
Can shingles come back, and should I get vaccinated?
Shingles can recur. The recombinant zoster vaccine is also recommended for people who have had shingles, after the rash has healed; plan the timing with your doctor.
References
Werner RN, et al. European consensus-based (S2k) Guideline on the Management of Herpes Zoster – guided by the European Dermatology Forum (EDF) in cooperation with the European Academy of Dermatology and Venereology (EADV), Part 2: Treatment. J Eur Acad Dermatol Venereol. 2017;31(1):20-29. DOI
Cohen JI. Clinical practice: Herpes zoster. N Engl J Med. 2013;369(3):255-263. DOI
Lal H, et al. Efficacy of an adjuvanted herpes zoster subunit vaccine in older adults. N Engl J Med. 2015;372(22):2087-2096. PubMed
Dooling KL, et al. Recommendations of the Advisory Committee on Immunization Practices for Use of Herpes Zoster Vaccines. MMWR Morb Mortal Wkly Rep. 2018;67(3):103-108. CDC
This article is for general information; diagnosis and treatment are decided after examination.
Last updated: 24 October 2026 · Dr. Kağan Cingöz, MD, dermatologist
Contact
WhatsApp: +90 555 209 09 39 · info@drkagancingoz.com · İstasyon Mahallesi, Edirne Caddesi No:102, Kırklareli, Türkiye
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