Quinsy

This observational study aims to learn more about complicated infections treated by otorhinolaryngologists. The main questions to answer are: * What is the management of complicated sinonasal infections in Ljubljana, Slovenia, * What is the management of complicated ear and temporal bone infections in Ljubljana, Slovenia, * What is the management of complicated neck soft tissue infections in Ljubljana, Slovenia, * What is the management of complicated laryngeal infections in Ljubljana, Slovenia Participants will receive standard treatment according to the established evidence-based clinical practice.