Prader-Willi syndrome is a genetic disorder that affects many parts of the body. It is caused by the loss of function of specific genes on chromosome 15. Individuals with this condition often experience a constant feeling of hunger, leading to overeating and obesity. Other symptoms may include developmental delays, learning difficulties, and behavioral issues. People with Prader-Willi syndrome may also have distinctive physical features, such as a narrow forehead, almond-shaped eyes, and small hands and feet. Early diagnosis and intervention can help manage symptoms and improve quality of life. Treatment often includes a structured diet and support for developmental challenges.