Can you get chickenpox more than once?

Once a person has had chickenpox (varicella), they typically develop lifelong immunity to the virus—varicella-zoster virus (VZV). This means that a second episode of classic chickenpox is extremely rare in immunocompetent individuals. The immune system usually mounts a robust and durable response after primary infection, effectively preventing reinfection.

However, there are important exceptions. In rare cases, individuals with weakened immune systems—such as those undergoing chemotherapy, organ transplant recipients on immunosuppressive therapy, or people living with advanced HIV/AIDS—may experience a second bout of chickenpox. Additionally, very early primary infection (e.g., in infancy) or incomplete immune response may, in exceptional circumstances, result in apparent reinfection—but these instances are exceedingly uncommon and often require laboratory confirmation to distinguish from other vesicular illnesses.

It’s also critical to clarify that while recurrent *chickenpox* is rare, the same virus can reactivate later in life as *herpes zoster* (shingles)—a distinct clinical entity characterized by a unilateral, dermatomal rash and neuropathic pain. Shingles reflects VZV reactivation from latency in dorsal root ganglia, not a new infection.

If someone develops a widespread, pruritic, vesicular rash resembling chickenpox after prior infection, clinicians should consider alternative diagnoses—including enteroviral infections (e.g., hand-foot-mouth disease), disseminated herpes simplex virus, drug eruptions, or contact dermatitis—and confirm with PCR testing of lesion swabs when appropriate.