Intellectual disability is a developmental condition characterized by limitations in both intellectual functioning and adaptive behavior. These limitations are observable before adulthood and impact fundamental cognitive skills, such as reasoning, problem-solving, and learning. The manifestation of the condition is highly varied, resulting from a diverse range of etiologies, which can include genetic syndromes, chromosomal anomalies, neurological impairments, or environmental factors. Diagnostically, evaluation focuses not only on measured intelligence quotient (IQ) scores, which typically fall below average, but also on the degree of support needed in daily life tasks, including self-care, communication, and community living. Intervention and support services are critical for promoting skill development and maximizing the individual's potential for independent living.