Communication is important for effective treatment and involves both verbal and non-verbal elements. Verbal communication uses speech while non-verbal communication conveys messages through gestures, facial expressions, eye contact, and body language. There are also different styles of communication such as assertive, aggressive, and passive. Effective communication requires strong listening skills to understand patients and asking questions to gather necessary information. Barriers like noise, time constraints, or psychological factors can interfere with communication. Confidentiality protects private patient information.