F00-F09: Organic, including symptomatic, mental disorders

F07: Personality and behavioural disorders due to brain disease, damage and dysfunction

Personality and behavioural disorders due to brain disease, damage, and dysfunction are a group of mental health conditions where changes in a person's thoughts, behaviours, and emotions are caused by physical changes in the brain. These disorders often develop following illnesses or injuries that directly affect the brain, like stroke, traumatic brain injury, or diseases like Alzheimer's or Parkinson's. They might also be caused by brain disorders such as brain tumours, infections, or inflammatory conditions. Symptoms may vary widely but often involve changes in personality, mood swings, aggressive or impulsive behaviours, difficulty thinking clearly or remembering things, and trouble with daily activities. These changes may happen gradually or suddenly, depending on the nature and severity of the brain condition. The primary organ affected is the brain, and these disorders can influence a person's quality of life and their ability to function independently.