Perceptual disturbances refer to changes in the way a person experiences their surroundings. These can include alterations in vision, hearing, taste, touch, or smell, leading to sensations that may not correspond to reality. Common examples include seeing things that aren't there, hearing voices, or feeling sensations on the skin without any physical cause. These disturbances can occur in various conditions, such as schizophrenia, migraines, or substance use disorders. They can significantly impact daily life, making it challenging for individuals to interact with their environment and others. Understanding these disturbances is crucial for effective treatment and support.