ABSTRACT
In discussing the classification of voice disorders, it is valuable to focus on the broad spectrum of voice disorders to examine how we can best describe them. This chapter describes a diagnostic classification system for voice disorders (DCSVD) which made distinction between Organic Voice Disorder (OVD) and Functional Voice Disorder (FVD), with Psychogenic Voice Disorder (PVD) and Muscle Tension Voice Disorder (MTVD) as subtypes of FVD. It also dicusses some topics such as: Professional and Occupational Voice Users, Gender Dysphoria, Paradoxic Vocal Fold Dysfunction, Chronic Cough and Aerophagia. Muscle Tension Voice Disorder disorder involves a structurally normal larynx which is subject to muscle misuse or dysfunction. Psychogenic Voice Disorder results when the voice is disordered for psychological reasons and where there is no structural abnormality in the voice production system. Paradoxic Vocal Fold Dysfunction (PVFD) or Vocal Cord Dysfunction (VCD) is a disorder which is the focus of some debate.
