What should you know about get chickenpox vaccine?

Chickenpox is caused by varicella-zoster virus. Vaccination prepares immune defences to respond if exposure occurs and can reduce the chance of serious illness. It does not treat an existing rash. The same virus can later reactivate as [Shingles](/conditions/shingles/), although vaccination decisions and shingles vaccination are separate discussions.

Bring your vaccination history and tell the clinician about pregnancy, immune-system conditions, severe allergies, recent illness, or medicines that affect immunity. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can help clarify the schedule. A sore arm, mild fever, or brief tiredness may occur. Follow the clinic's advice about observation and contact them if a reaction worries you. Do not use the vaccine as treatment for active [Chickenpox](/conditions/chickenpox/).

Seek urgent help for trouble breathing, swelling of the face or throat, collapse, or a rapidly spreading allergic reaction after vaccination. Contact a clinician for a high or persistent [Fever](/symptoms/fever/) or an unusual blistering rash, especially if you are pregnant or immunocompromised. After exposure, ask promptly about preventive or antiviral options rather than waiting for symptoms.

Do I need this vaccine based on my history? Is it suitable with my health conditions or medicines? What reactions should I expect? What should I do after an exposure? When should I seek help for a rash?