The objective of this registry is to confirm the safety and the performance of the ECE50 in medical routine by collecting data.

The Endoscopic Cap Electrode (ECE50) has been designed for the delivery of electrostimulation to selected laryngeal muscles. The primary objective of this registry is to retrieve real-life data on the safety and performance of the Endoscopic Cap in medical routine. Subject's participation will last a maximum of 2 hours. Upon successful conclusion of the screening session starts the testing session of the ECE50. The ECE50 has been designed to be placed on the top of a videoendoscope for the delivery of electrostimulation to the laryngeal region. The stimulation and reaction of the muscles can provide information about the presence and type of dysfunctions and thus influence the treatment procedure. Being a registry a collection of records generated within routine medical procedures with a medical device approved for the EU market, it does not pose additional risks for the patients participating in it.

Inclusion Criteria:

• Legal adults (i.e., as a general rule patients ≥ 18 years old)
• Legal adults requiring a diagnosis for a disorder that could be traced back to uni- or bilateral dysfunction of one or more laryngeal muscle(s) of the posterior cricoid region
• Signed and dated informed consent before the start of any registry-specific procedure for all the recruited subjects

Exclusion Criteria:

• Lack of compliance with any inclusion criteria
• Use of an active medical implant
• Known allergies or intolerance to the material used for this registry
• Parallel participation in a device/drug registry in the period of data collection, which could confound the results of the registry
• Anything that, in the opinion of the Registry Responsible, would place the subject at increased risk or preclude the subject's full compliance with the general requirements of this registry

• Target population: adults of both sexes who, in the expert opinion of the registry responsible is in need of an ECE50 examination
• Accessible population: target population matching the selection criteria
• Intended population: accessible population that can be recruited by the registry sites
• Actual population: intended population who signed the ICF
• Analytic population: actual population compatible with PP analysis