Shingles is a rash with blisters that is often painful. It usually occurs in one part of the body and can last for several weeks. It is caused by the same virus that causes chickenpox. After you have had chickenpox, the virus that caused it stays in your body in nerve cells. Sometimes, after many years, if your immune system (the body’s natural defenses) becomes weaker (due to age, an illness, or medicine you are taking), the virus can cause shingles.
Shingles vaccine that helps to protect adults against shingles (herpes zoster) and post-herpetic neuralgia (PHN), the long-lasting nerve pain that follows shingles. It reminds your body about the virus that causes shingles. This helps your immune system (the body’s natural defenses) stay prepared to fight the virus and protect you against shingles and its complications.