Identify common symptoms, causes and spread, treatment, and risks of chickenpox (varicella).

The most common late complication of chickenpox is shingles (herpes zoster), caused by reactivation of the varicella zoster virus decades after the initial, often childhood, chickenpox infection.

Chickenpox (varicella-zoster virus) causes an itchy, blister-like rash that’s highly contagious. Getting a vaccine can protect you from it.

Apr 19, 2023 · The varicella-zoster virus stays in your nerve cells after the chickenpox rash goes away. Many years later, the virus can turn back on and cause shingles, a painful cluster of blisters. The …

Feb 5, 2026 · What is chickenpox (varicella)? Chickenpox is an infection that causes an itchy, blistering rash and is very contagious, meaning it is spread easily from one person to another.

Dec 18, 2025 · Chickenpox is a contagious disease caused by the varicella-zoster virus. It causes an itchy rash with blisters. Learn about vaccines and treatment.

Nov 14, 2023 · Chickenpox is caused by the contagious varicella virus and mainly affects children. It’s easy to spot because of its itchy rash, mild fever, and body aches.