What is shingles, also known as zona?

Shingles, or herpes zoster, affects one in three people, caused by the reactivation of the varicella-zoster virus. Early diagnosis is crucial for effective treatment, which can alleviate symptoms and reduce the duration of outbreaks. Symptoms include painful rashes typically appearing on one side of the body, often preceded by intense pain. Diagnosis is clinical, based on skin lesions and symptoms, and can be confirmed through laboratory tests if necessary. Shingles is contagious, transmitting the virus to those who haven't had chickenpox, potentially causing chickenpox instead. Treatment focuses on antiviral medications and pain management, with complications like postherpetic neuralgia affecting many patients, especially older adults. Symptoms can persist long after skin lesions heal, impacting quality of life.