The exact cause of hyperactivity is not entirely understood, but it is believed to be influenced by a combination of genetic, neurological, and environmental factors. Genetics play a significant role, as hyperactivity often runs in families. Additionally, abnormalities in brain function or structure, particularly in areas related to attention and self-control, can contribute to hyperactive behavior. Environmental factors such as prenatal exposure to toxins, poor nutrition, or chaotic home environments also play a role.