Several factors can accelerate or temporarily worsen the symptoms of dementia. Infections, particularly urinary tract infections, are a leading cause of sudden deterioration and should always be investigated when behaviour changes rapidly. Poor sleep, dehydration, and inadequate nutrition all have a significant negative impact on cognitive function. Certain medications, including some prescribed for other conditions, can cause confusion and should be reviewed regularly. High levels of stress, social isolation, major changes in environment or routine, and untreated pain are other important factors. Some of these triggers cause reversible deterioration, meaning that treating the underlying issue can lead to a noticeable improvement.