What should you know about exposure to chickenpox in pregnancy?

Chickenpox is caused by varicella-zoster virus. A person can be contagious before the rash is obvious, and exposure does not always lead to illness. Your clinician will ask when contact occurred, how close or prolonged it was, whether the other person had a confirmed [Chickenpox](/conditions/chickenpox/), and whether you have had the illness or vaccination before.

Pregnancy makes prompt advice particularly useful because the team may need to confirm immunity and plan observation. Do not assume a past uncertain rash means you are protected. If you later develop [fever](/symptoms/fever/) or [Skin Blisters](/symptoms/skin-blisters/), mention the exposure when you call.

Call your obstetric, maternity, or primary-care team as soon as possible and give the exposure date and your pregnancy details. Ask whether a blood test or another assessment is needed. Avoid close contact with people who are pregnant, newborn, or immunocompromised until you have received advice if you develop a rash.

Do not start medicines or vaccination without professional guidance. Depending on your circumstances, the team may discuss [Antiviral Treatment](/treatments/medical-dermatology/antiviral-therapy/) or [Chickenpox Vaccination](/treatments/preventive-care-and-vaccination/chickenpox-vaccination/) at an appropriate time. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can help coordinate care when your maternity team is unavailable.

Get urgent medical advice if you develop fever, a new blistering or widespread rash, breathing difficulty, chest symptoms, severe headache, confusion, or feel suddenly very unwell. Call before attending a clinic so staff can reduce exposure to others. A rash that follows exposure could be [Chickenpox](/conditions/chickenpox/) or, in a different pattern, [Shingles](/conditions/shingles/), and both deserve clinical assessment during pregnancy.

Am I likely to be immune, and should I have testing? What symptoms should I monitor and for how long? Who should I contact outside office hours? Would treatment be appropriate if symptoms appear? How should I protect other household members?