Stridor is one of the most common reasons for referral to a pediatric ENT subspecialist. This chapter is prepared as technical update for the advanced practitioner (neonatologist, pediatrician, family physician, general ENT) as a supplement to existing classic textbook material. In addition to existing established surgical approaches, newer and more conservative treatment techniques are increasingly successful as the primary or adjunct treatment. Surgical and medical practice continues to be shaped by increased awareness of and demand for conservative procedures and higher risk aversion. Management of stridor now requires a greater variety of updated medical and surgical expertise. Increased collaboration between specialists allows for an extended period of interventions and introduces new challenges and perspectives for all involved. - Practical skills for interview, assessment of the severity and cause of stridor are discussed in detail from the perspective of the pediatric ENT subspecialist collaborating closely with several other subspecialty areas.