I've Never Had Chickenpox: What Should I Know?

Chickenpox is caused by varicella-zoster virus. A person with no confirmed past infection or vaccination may still be susceptible. Infection often causes an itchy blistering rash and fever, and the virus can remain in the body and later reactivate as shingles. A clinician can review your history and, when appropriate, discuss testing or vaccination.

Check whether childhood records or family information clarify your history, but do not rely on memory alone. Ask about chickenpox vaccination before pregnancy or immunosuppressive treatment is being considered, because timing and suitability matter. After close exposure, contact a GP promptly; avoid close contact with people who are pregnant, immunocompromised, or very young until you have advice. Do not scratch blisters, and keep any rash covered when practical.

Contact a clinician if you develop fever or new itchy fluid-filled blisters after exposure, particularly if you are pregnant, immunocompromised, or caring for a vulnerable person. Seek urgent help for breathing difficulty, confusion, severe headache, dehydration, rapidly worsening illness, or a rash involving the eyes. Antiviral treatment may be considered early for some people.

How can we check whether I have immunity? Is vaccination appropriate for my age and health? What should I do after exposure? Which symptoms mean I need same-day advice?