What Is Mpox? Mpox is a contagious viral disease caused by the monkeypox virus , a member of the same virus family as the virus that causes smallpox. Although the illnesses are related, mpox is generally much less severe and most people recover fully within a few weeks. The disease can affect individuals of all ages. While many cases are mild, some people—including young children, pregnant individuals, and those with weakened immune systems—may experience more serious complications and require medical attention. Common Symptoms of Mpox The most recognizable symptom of mpox is a distinctive skin rash. The rash often changes over time, beginning as flat spots before developing into raised bumps, fluid-filled blisters, and eventually scabs that heal. The rash may appear on various parts of the body, including: Face Hands and feet Arms and legs Chest and back Mouth Genital or anal area Many people also develop flu-like symptoms before or alongside the rash, such as: Fe...