What is difference between informal and formal chaperone in a clinical setting?

In a clinical setting, an informal chaperone is typically a staff member or a trusted person accompanying a patient during an examination or procedure, often without formal training or specific policies governing their role. In contrast, a formal chaperone is usually a trained healthcare professional who adheres to established protocols, ensuring patient comfort, privacy, and safety during clinical interactions. The use of formal chaperones is often mandated by healthcare institutions to uphold standards and protect both patients and providers.