There is no specific "angry stage" in dementia. However, pronounced mood, personality, and cognitive function changes often appear during the middle or moderate stage of dementia, which is the longest and can last many years. Anger and aggression can happen at any time but affect some people more in the middle to late stages. Aggressive behaviors may be verbal or physical and can occur suddenly, with no apparent reason, or result from a frustrating situation. There may sometimes be warning signs, such as changes in voice and facial expressions, when a person with dementia becomes angry. However, this anger may also occur spontaneously without apparent cause or due to seemingly small things. Anger in people with dementia may present in physical or verbal forms, such as yelling, screaming, and calling out. Some potential causes of anger relating to symptoms of dementia include lack of recognition, misunderstanding, and physical discomfort. It is important to understand what causes anger in dementia and to identify triggers to prevent it.