Chickenpox is a contagious disease caused by an infection with the varicella-zoster virus. Once the disease appears, it is important to isolate oneself, avoid crowded places, and avoid contact with children or elderly people, as they are more susceptible to widespread infection. During treatment, it is advisable to drink plenty of water, rest, avoid spicy or irritating foods, and refrain from staying up late. Since chickenpox causes numerous blisters on the body, it is important to protect the affected areas to prevent secondary infections. Treatment usually involves common antiviral medications and typically lasts about a week. During treatment, it is also important not to bathe and to avoid exposure to cold drafts.