Shingles, or herpes zoster, is a viral infection caused by the varicella-zoster virus, which also causes chickenpox. After having chickenpox, the virus lies dormant in nerve cells and can reactivate later in life, typically when the immune system is weakened.
People at higher risk include those over 50, those with weakened immune systems, and those under stress. Symptoms include fever, fatigue, headaches, a painful rash, and blisters. While shingles isn’t contagious, the varicella-zoster virus can spread to those who haven’t had chickenpox. A vaccine, Shingrix, can prevent shingles, and antiviral medications can reduce symptoms and prevent complications.
