inattentive

Inattentive is an adjective describing a state or behavior in which a person does not pay close attention or is easily distracted. It can refer to a momentary lapse in focus or to a pattern of attention difficulties that affects daily functioning.

In clinical contexts, inattentiveness is a core feature of attention-deficit/hyperactivity disorder, predominantly inattentive presentation (ADHD-PI). Symptoms emphasize difficulty sustaining attention, careless mistakes, and problems organizing tasks, rather than hyperactive or impulsive behavior.

Common signs include frequently missing details, failing to follow instructions or finish tasks, becoming easily distracted by irrelevant stimuli, forgetfulness, and trouble maintaining focus during conversations or lectures. These patterns must be persistent and impair functioning in at least two settings to meet diagnostic criteria.

Causes are multifactorial, involving neurodevelopmental factors and genetics; other factors such as sleep deprivation, stress, or mood and anxiety disorders can contribute. Management often combines behavioral and environmental strategies with professional evaluation. In ADHD-PI, stimulant or non-stimulant medications may be used under medical supervision.

In everyday language, inattentive describes temporary or situational inattention, whereas clinical use implies a more persistent pattern that may require assessment and intervention.