Shingles, which generally takes two to three weeks to heal, is a skin disease caused by the varicella-zoster virus infection. It usually occurs when the body’s immune system is weakened, manifesting as blisters along the path governed by skin nerves. The blisters are a self-limiting disease and can heal on their own, but some individuals may experience severe symptoms and significant pain, requiring treatment with medication under a doctor's guidance. If the person is young with strong physical health and resistance, recovery typically takes about two weeks. However, for elderly individuals with poorer health, weaker immune systems, and underlying diseases, recovery may take three weeks or longer.