Causes & Risk Factors (ADHD)

Causes of ADHD: Risk Factors and Hyperactivity Causes Explained

Attention-deficit/hyperactivity disorder (ADHD) affects about 5% to 7% of children and adolescents worldwide, with diagnosis rates higher in boys than girls by approximately 2 to 4 times . The condition is characterized by symptoms of inattention, hyperactivity, and impulsivity that typically begin before age 12 and can continue into adulthood . Although ADHD is common across all demographics, diagnosis rates vary by age, sex, and ethnicity, influenced by symptom presentation and healthcare access . Understanding the causes and risk factors of ADHD is essential to improving early detection and management.