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Shingles is caused by the reactivation of the varicella-zoster virus, the same virus responsible for chickenpox. After a person recovers from chickenpox, the virus can remain inactive in nerve tissue for many years before becoming active again.

Although shingles is more common in older adults, it can affect younger people as well, particularly those with weakened immune systems due to stress, illness, or certain medical conditions.

Early symptoms are often easy to miss. Many people first experience “burning, tingling, pain, or heightened skin sensitivity” before any visible rash appears. Because these signs can resemble other health issues, diagnosis may sometimes be delayed.

When a rash develops, it usually appears on one side of the body and follows the path of a nerve. Prompt treatment is important, as antiviral medications work best when started early. The article notes that treatment should begin “ideally within 72 hours” to help reduce the severity of symptoms and lower the risk of complications.

Recognizing the warning signs and seeking medical care quickly can improve recovery. Vaccination and maintaining a healthy immune system may also help reduce the risk of developing shingles and its long-term effects.